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来自 web前端 2019-11-01 16:14 的文章
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静态能源文件自动减削并替换到压缩版本(大型网址优化手艺)

2015/11/26 · HTML5 · 静态能源

原稿出处: Kelly   

那三遍,作者总计和分享黄金时代项大型网址优化技巧,那就是在项目中机动减少静态财富文件(css、js),并让网站自行加载压缩后的能源文件。当然,那项手艺在雅虎35条前端优化建议里也许有记载,但它那只是给出三个理论的方案而已,况且采纳的是表面压缩工具去减少,而在自个儿的门类中,是向来通过友好的次第自动化去减弱全数css、js文件,然后让页面一向加载所减弱后的财富,接下去直接进入正题。

本次试验应用的是PHP脚本语言,版本是PHP5.6,是在LINUX下搭建的条件(互连网搭建无论是搭建LAMP依然LNMP的学科都各式各样混淆黑白,后一次小编会总括和享用如何在LINUX下搭建服务器景况的博文,何况搭建的景况必得一遍性搭建变成功的)。所选用的框架是CI框架,所选拔的沙盘是斯马特y模板引擎。当然了,这几个只是自家所运用的条件而已,倘让你是PHP开荒者,借令你要测量试验下此番实验,那么,作者建议您的PHP版本选择5.4上述,至于框架用怎样都以足以的。而就算您不是PHP开拓者(你是JSP或许是ASP开采者也许是其它开垦者),那么您明白好那生机勃勃思路后,完全能够在协调熟习的言语里开展实验测量检验。

一、原理图

先是作者画一张思路图,便于大家先领会。

先是是能源减弱原理图:

美高梅手机登录网站 1

跟着是能源文件替换的原理图:

美高梅手机登录网站 2

假使我们认真掌握并且看懂这两张原理图的话,基本上也就明白了本身所享受的笔触。借使照旧不能够分晓的话,接下去笔者会结合代码,对以上原理图的每一步进行详细疏解。

二、思路详细解析

1.先是是调用该滑坡的措施,你能够把该方法放在网址所要加载的公共类之处,比如每一趟访谈网址都会调用该滑坡方法实行压缩。当然,那个只是在开拓条件才会每一次都调用,假设是线上的情况,在你的网址发一回新本子的时候,调用叁次用来生成压缩版的静态财富就能够了。

class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //压缩jscss资源文件 $this->compressResHandle(); } /** * 压缩js、css财富文件(优化) * @return [type] [description] */ private function compressResHandle() { $this->load->library('ResMinifier'); //压缩钦点文件夹下的财富文件 $this->resminifier->compressRes(); } }

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class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library('ResMinifier');
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}

2.随后就调用了 ResMinifier类里的 compressRes方法。在这里边本人先附上 ResMinifier这一个类的代码,然后方便一步步开展剖释教学

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); /** * 能源压缩类 */ class ResMinifier { /** 必要收缩的财富目录*/ public $compressResDir = ['css', 'js']; /** 忽视压缩的路线,比如此处是js/icon起先的路线忽视压缩*/ public $compressResIngorePrefix = ['js/icon']; /** 能源根目录*/ public $resRootDir; /** 能源版本文件路线*/ private $resStatePath; public function __construct() { $this->resRootDir = WEBROOT . 'www/'; $this->resState帕特h = WEBROOT . 'www/resState.php'; } public function compressRes() { //获取贮存版本的财富文件 $resState = $this->getResState(); $count = 0; //在那从前遍历需求降低的能源目录 foreach ($this->compressResDir as $resDir) { foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) { //获取该能源文件的绝对路径$filePath = str_replace('\', '/', $file->getReal帕特h()); //获取文件相对路线 $object = substr($filePath, strlen($this->resRootDir)); //总结文件的版本号 $state = $this->_getResStateVersion($filePath); //获取文件的多少个参数值 if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) { continue; } //压缩文件的相对路线 $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject); //************此处p推断是最关键部分之生机勃勃*****************// //判定文件是还是不是留存且早已更改过 if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) { continue; } //确定保证/www/min/目录可写 $this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress) { $this->compressResFileAndSave($filePath, $minFilePath); } else { copy($filePath, $minFilePath); } $resState[$object] = $state; $resState[$minObject] = ''; $count++; if ($count == 50) { $this->_saveResState($resState); $count = 0; } } } if($count) $this->_saveResState($resState); } public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) { //获取能源相对路线 $filePath = $this->resRootDir . $object; //判定能源是或不是存在 if (!file_exists($filePath)) return "能源文件一纸空文{$filePath}"; //版本号 $state = $this-> _getResStateVersion($filePath); //文件名后缀 $extension = pathinfo($filePath, PATHINFO_EXTENSION); //是或不是要减少 $needCompress = true; //判定财富文件是或不是是以 .min.css或许.min.js结尾的 //此类结尾平常都以已减弱过,比方jquery.min.js,就无须再压缩了 if (str_end_with($object, '.min.'.$extension, true)) { //压缩后的能源寄放路线,放在 /www/min/ 目录下 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension; $needCompress = false; } else if (in_array($extension, $this->compressResDir)) { //此处是内需降低的文件目录 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; //看看是还是不是是忽视的门径前缀 foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } } } else { $minObject = 'min/'.$object; $needCompress = false; } return true; } /** * 获取存放能源版本的文本 * 它是投身八个数组里 * $resState = array( * '文件路线' => '对应的本子号', * '文件路线' => '对应的版本号', * '文件路线' => '对应的本子号', * ); * @return [type] [description] */ public function getResState() { if (file_exists($this->resStatePath)) { require $this->resStatePath; return $resState; } return []; } /** * 总括文件的版本号,那个是基于总计文件MD5散列值获得版本号 * 只要文件内容更改了,所计算获得的散列值就能不相似 * 用于判别能源文件是不是有退换过 * @param [type] $filePath [description] * @return [type] [description] */ public function _getResStateVersion($filePath) { return base_convert(crc32(md5_file($filePath)), 10, 36); } /** * 确认保障目录可写 * @param [type] $dir [description] * @return [type] [description] */ private function _ensureWritableDir($dir) { if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if (!is_writable($dir)) { show_error('目录'.$dir.'不可写'); } } } /** * 将压缩后的能源文件写入到/www/min/下去 * @param [type] $filePath [description] * @param [type] $minFilePath [description] * @return [type] [description] */ private function compressResFileAndSave($filePath, $minFilePath) { if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) { //$CI->exceptions->show_exception("写入文件{$minFilePath}失败"); show_error("写入文件{$minFilePath}战败", -1); } } /** * 压缩能源文件 * @param [type] $filePath [description] * @return [type] [description] */ private function compressResFile($filePath) { $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if ($extension === 'js') { require_once 'JShrink/Minifier.php'; return JShrinkMinifier::minify(file_get_contents($filePath)); } else if ($extension ==='css') { $content = file_get_contents($filePath); $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content); $content = str_replace(["rn", "r", "n"], '', $content); $content = preg_replace('/([{}),;:>])s+/', '$1', $content); $content = preg_replace('/s+([{}),;:>])/', '$1', $content); $content = str_replace(';}', '}', $content); return $content; } else { //$CI->exceptions->show_exception("不辅助压缩{extension}文件[$filePath]"); show_error("不协理压缩{extension}文件[$filePath]", -1); } } private function _saveResState($resState) { ksort($resState); $content = "<?phpnn$resState = array(n"; foreach ($resState as $k => $v) { $content .= "t '$k' => '$v',n"; } $content .= ");nn"; file_put_contents($this->resStatePath, $content); } } 点击张开财富压缩类

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* 资源压缩类
*/
class ResMinifier {
    /** 需要压缩的资源目录*/
    public $compressResDir = ['css', 'js'];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = ['js/icon'];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . 'www/';
        $this->resStatePath = WEBROOT . 'www/resState.php';
    }
 
    public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;
 
        //开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace('\', '/', $file->getRealPath());
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);
 
                //获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }
 
                //压缩文件的绝对路径
                $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }
 
                //确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }
 
                $resState[$object] = $state;
                $resState[$minObject] = '';
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);
    }
 
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, '.min.'.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = 'min/'.$object;
            $needCompress = false;
        }
        return true;
    }
 
    /**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }
 
    /**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }
 
    /**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error('目录'.$dir.'不可写');
            }
        }
    }
 
    /**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === 'js') {
            require_once 'JShrink/Minifier.php';
            return JShrinkMinifier::minify(file_get_contents($filePath));
        } else if ($extension ==='css') {
            $content = file_get_contents($filePath);
            $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content);
            $content = str_replace(["rn", "r", "n"], '', $content);
            $content = preg_replace('/([{}),;:>])s+/', '$1', $content);
            $content = preg_replace('/s+([{}),;:>])/', '$1', $content);
            $content = str_replace(';}', '}', $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }
 
    private function _saveResState($resState) {
        ksort($resState);
        $content = "<?phpnn$resState = array(n";
        foreach ($resState as $k => $v) {
            $content .= "t '$k' => '$v',n";
        }
        $content .= ");nn";
        file_put_contents($this->resStatePath, $content);
    }
 
}
 
点击打开 资源压缩类

全总类超越一半代码作者都加了讲解,方便大家快捷掌握。这里笔者也会对每大器晚成行代码进行解释。

(1)

PHP

/** 供给减小的财富目录*/ public $compressResDir = ['css', 'js']; /** 忽视压缩的门路,举个例子此处是js/icon先导的渠道忽视压缩*/ public $compressResIngorePrefix = ['js/icon']; /** 财富根目录*/ public $resRootDir; /** 能源版本文件路线*/ private $resStatePath; public function __construct() { $this->resRootDir = WEBROOT . 'www/'; $this->resStatePath = WEBROOT . 'www/resState.php'; }

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/** 需要压缩的资源目录*/
    public $compressResDir = ['css', 'js'];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = ['js/icon'];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . 'www/';
        $this->resStatePath = WEBROOT . 'www/resState.php';
    }

$compressResDir变量是内需减弱的财富目录,假诺你有新的管理目录,能够在这变量里固然新的目录名就能够管理。附上本身测验项目标目录图

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$compressResIngorePrefix 忽视被裁减的路径的路径前有的是该数组变量的字符串,举例有多个财富路线为 js/icon/bg.js可能是js/icon_index.js也许是js/icon.header.js,假设在该数组中参预了 js/icon那么些字符串,那么能源路线为js/icon早先的都会被忽视掉,也等于一向跳过,不用压缩。(因为财富文件里总有部分是无需减小的嘛)

$resRootDir贮存能源根目录的

$resState帕特h 这么些是财富版本文件路径

(2)步入compressRes() 方法,大家先剖判后边那风华正茂段代码

PHP

public function compressRes() { //获取存放版本的财富文件 $resState = $this->getResState(); $count = 0;

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public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;

——————————-调用getResState() 讲解start————————————————————-

这里首先是调用 $this->getResState() 方法来赢得存放版本的财富文件,此处先跳到该方法看看是哪些写的,其实便是带有该公文,然后回到里面贮存版本号的数组,大家看注释能够了然该公文里存放版本号的格式(顺便附上海体育场面让我们看看)

PHP

/** * 获取贮存财富版本的文件 * 它是献身贰个数组里 * $resState = array( * '文件路线' => '对应的本子号', * '文件路线' => '对应的版本号', * '文件路线' => '对应的本子号', * ); * @return [type] [description] */ public function getResState() { if (file_exists($this->resStatePath)) { require $this->resStatePath; return $resState; } return []; }

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/**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }

(财富版本文件截图:)

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——————————-调用getResState() 讲解end————————————————————-

紧接着看compressRes()里的那后生可畏段代码

PHP

//起首遍历供给减小的财富目录 foreach ($this->compressResDir as $resDir) { foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) { //获取该能源文件的相对路线$filePath = str_replace('\', '/', $file->getRealPath()); //获取文件相对路线 $object = substr($filePath, strlen($this->resRootDir)); //计算文件的版本号 $state = $this->_getResStateVersion($filePath);

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//开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace('\', '/', $file->getRealPath());
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);

先是个遍历的是js和css目录 第一个遍历是将js目录或许css目录里的文书都形成路线格局,

比如获取文件的相对路线 $filePath 的值是那样子的:

/usr/local/apache2/htdocs/project/www/css/home/index.css

而文件的相对路线$object是那样子的 :

css/home/index.css

这里就起头调用$this->_getResStateVersion($filePath)来测算文件的本子号

——————————-调用_getResStateVersion($filePath) 讲解start————————————————————

PHP

/** * 计算文件的本子号,那些是遵照总括文件MD5散列值获得版本号 * 只要文件内容更改了,所总计获得的散列值就能够区别等 * 用于判别能源文件是还是不是有退换过 * @param [type] $filePath [description] * @return [type] [description] */ public function _getResStateVersion($filePath) { return base_convert(crc32(md5_file($filePath)), 10, 36); }

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/**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }

——————————-调用_getResStateVersion($filePath) 讲解end————————————————————-

要么到版本号后,再看下风度翩翩段代码,这里早先调用$this->getObjectInfo()方法,这里获得到压缩文件的相对路线$minObject,是不是需求压缩$needCompress,版本号$state,文件后缀$extension。

PHP

//获取文件的几个参数值 if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) { continue; }

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//获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }

——————————调用$this->getObjectInfo() 讲解start————————————————————

PHP

/** * 获取能源文件有关新闻 * @param [type] $object 财富文件路线(www/css/home/index.css) * @param [type] $minObject 压缩能源文件路径(www/min/css/home/index.ae123a.css) * @param [type] $needCompress 是或不是必要压缩 * @param [type] $state 文件版本号 * @param [type] $extension 文件名后缀 * @return [type] [description] */ public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) { //获取能源相对路线 $filePath = $this->resRootDir . $object; //推断财富是不是存在 if (!file_exists($filePath)) return "能源文件海市蜃楼{$filePath}"; //版本号 $state = $this-> _getResStateVersion($filePath); //文件名后缀 $extension = pathinfo($filePath, PATHINFO_EXTENSION); //是或不是要收缩 $needCompress = true; //判别财富文件是否是以 .min.css或然.min.js结尾的 //此类结尾日常都以已压缩过,比方jquery.min.js,就不用再压缩了 if (str_end_with($object, '.min.'.$extension, true)) { //压缩后的财富贮存路线,放在 /www/min/ 目录下 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension; $needCompress = false; } else if (in_array($extension, $this->compressResDir)) { //此处是需求减小的文件目录 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; //看看是还是不是是忽视的路线前缀 foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } } } else { $minObject = 'min/'.$object; $needCompress = false; } return true; }

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/**
     * 获取资源文件相关信息
     * @param  [type] $object       资源文件路径 (www/css/home/index.css)
     * @param  [type] $minObject    压缩资源文件路径 (www/min/css/home/index.ae123a.css)
     * @param  [type] $needCompress 是否需要压缩
     * @param  [type] $state        文件版本号
     * @param  [type] $extension    文件名后缀
     * @return [type]               [description]
     */
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, '.min.'.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = 'min/'.$object;
            $needCompress = false;
        }
        return true;
    }

以此艺术里的每风流倜傥行代码基本上都有注释了,所以就不一句句进行疏解了,这里重要看上面包车型大巴判别部分:

if (str_end_with($object, ‘.min.’.$extension, true)) 那一个论断是相比财富文件路线字串尾巴部分是还是不是以 .min.$extension 结尾,比如是 jquery.min.js,这种文件本来正是
减去过的文件,所以就毫无再开展减少处理了, $minObject 那么些变量贮存的是减削后的财富文件路线。
那边附上str_end_with()函数的代码:

PHP

/** * 判别 subject 是或不是以 search结尾, 参数钦定是或不是忽视大小写 * @param [type] $subject [description] * @param [type] $search [description] * @param boolean $ignore_case [description] * @return [type] [description] */ function str_end_with($subject, $search, $ignore_case = false) { $len2 = strlen($search); if (0 === $len2) return true; $len1 = strlen($subject); if ($len2 > $len1) return false; if ($ignore_case) { return 0 === strcmp(substr($subject, $len1 - $len2), $search); } else { return 0 === strcasecmp(substr($subject, $len1 - $len2), $search); } }

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/**
     * 判断 subject 是否以 search结尾, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_end_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len2 > $len1) return false;
        if ($ignore_case) {
            return 0 === strcmp(substr($subject, $len1 - $len2), $search);
        } else {
            return 0 === strcasecmp(substr($subject, $len1 - $len2), $search);
        }
    }

if (in_array($extension, $this->compressResDir),这一个判别就是是或不是是供给管理的四个目录里的。

然后中间的foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } }

其一是剖断是还是不是是以$this->compressResIngorePrefix属性定义的近日部分字串开端的渠道,是的话就忽视压缩该财富文件。

看清到终极else 正是注明该财富文件无需减弱了,最终是回来$minObject,$needCompress,$state,$extension那七个变量。

——————————-调用$this->getObjectInfo() 讲解end————————————————————-

到这里三番两次回到看 compressRes()方法里面包车型地铁代码

PHP

//压缩文件的相对路径 $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject); //************此处p判定是最要害部分之风姿洒脱*****************// //判定文件是还是不是留存且早就更换过 if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) { continue; }

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//压缩文件的绝对路径
                $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }

这段代码首先是东挪西借出压缩文件的绝对路线,

继之下边这几个论断是不可紧缺的后生可畏部分,通过那一个决断就能够知道该能源文件是不是被转移过,要是退换过的话,就再次对该能源文件实行裁减,假若没改换过,就持续管理下多少个财富文件。看这里的推断:isset($resState[$object]) && $resState[$object] == $state,那一个论断正是判定该文件路线是还是不是存在  而且文件中对应的版本号和计量出的版本号是或不是还黄金年代致;isset($resState[$minObject]) &&file_exists($minFilePath),那一个是剖断压缩文件路线是还是不是存在,并且该压缩文件是还是不是实际存在目录中。

看下后生可畏段代码,如若能走到这一局地,表达当前的这些财富文件是被更改良的(代码改进过),那么那时就对文件进行压缩操作了

PHP

//确定保证/www/min/目录可写 $this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress) { $this->compressResFileAndSave($filePath, $minFilePath); } else { copy($filePath, $minFilePath); }

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//确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }

$this->_ensureWritableDir(),此办法是要保险新创造的www/min目录是可写的,这里附上代码:

——————————-调用$this->_ensureWritableDir() 讲解start————————————————————-

PHP

/** * 确认保障目录可写 * @param [type] $dir [description] * @return [type] [description] */ private function _ensureWritableDir($dir) { if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if (!is_writable($dir)) { show_error('目录'.$dir.'不可写'); } } }

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/**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error('目录'.$dir.'不可写');
            }
        }
    }

——————————-调用$this->_ensureWritableDir() 讲解end————————————————————-

if ($needCompress),那么些推断能源文件是或不是必要减小,要求的话调用$this->compressResFileAndSave($filePath, $minFilePath);无需的话,直接复制文件到压缩文件路线 copy($filePath, $minFilePath);

先看$this->compressResFileAndSave()

——————————-调用$this->compressResFileAndSave() 讲解start————————————————————-

PHP

/** * 将减削后的能源文件写入到/www/min/下去 * @param [type] $filePath [description] * @param [type] $minFilePath [description] * @return [type] [description] */ private function compressResFileAndSave($filePath, $minFilePath) { if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) { //$CI->exceptions->show_exception("写入文件{$minFilePath}战败"); show_error("写入文件{$minFilePath}退步", -1); } } /** * 压缩财富文件 * @param [type] $filePath [description] * @return [type] [description] */ private function compressResFile($filePath) { $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if ($extension === 'js') { require_once 'JShrink/Minifier.php'; return JShrinkMinifier::minify(file_get_contents($filePath)); } else if ($extension ==='css') { $content = file_get_contents($filePath); $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content); $content = str_replace(["rn", "r", "n"], '', $content); $content = preg_replace('/([{}),;:>])s+/', '$1', $content); $content = preg_replace('/s+([{}),;:>])/', '$1', $content); $content = str_replace(';}', '}', $content); return $content; } else { //$CI->exceptions->show_exception("不补助压缩{extension}文件[$filePath]"); show_error("不协理压缩{extension}文件[$filePath]", -1); } }

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/**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === 'js') {
            require_once 'JShrink/Minifier.php';
            return JShrinkMinifier::minify(file_get_contents($filePath));
        } else if ($extension ==='css') {
            $content = file_get_contents($filePath);
            $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content);
            $content = str_replace(["rn", "r", "n"], '', $content);
            $content = preg_replace('/([{}),;:>])s+/', '$1', $content);
            $content = preg_replace('/s+([{}),;:>])/', '$1', $content);
            $content = str_replace(';}', '}', $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }

先裁减,再将减削后的剧情写入到 压缩文件路线里去。

咱俩先看下这些压缩方法:

$this->compressResFile($filePath); 此方法中分两类压缩,第意气风发类时对js文件进行压缩,第二类的对css文件举行减削。先说js压缩,这里是调用二个JShrink的类,它

三个用来压缩js文件的PHP类,百度得以找到,调用那个类的minify()那些主意就能够减弱了;而css的裁减利用正则替换到减弱,把那么些空格换行什么的都去掉。到此就收缩成功

了,然后再将滑坡后的能源写入到对应的压缩文件路径里去。

——————————-调用$this->compressResFileAndSave() 讲解end————————————————————-

进而继续看compressRes()那几个办法里的代码,这里开首正是保存新的本子号到$resState数组里 $object=>$state,还也是有就是新的收缩路线$minObject,而这里$count++的意义是,当以此轮回四十五遍就将 $resState这一个数组写入贰次到 resState.php文件里,这里是出于谨慎思量而已,要是您不加这个$count的拍卖那部分也得以,最终写入一遍就行了。

PHP

$resState[$object] = $state; $resState[$minObject] = ''; $count++; if ($count == 50) { $this->_saveResState($resState); $count = 0; } } } if($count) $this->_saveResState($resState);

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$resState[$object] = $state;
                $resState[$minObject] = '';
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);

这里看$this->_saveResState($resState),这几个艺术就是将$resState数组写入到resState.php文件里去的情势。

——————————-调用$this->_saveResState($resState) 讲解start————————————————————-

PHP

private function _saveResState($resState) { ksort($resState); $content = "<?phpnn$resState = array(n"; foreach ($resState as $k => $v) { $content .= "t '$k' => '$v',n"; } $content .= ");nn"; file_put_contents($this->resStatePath, $content); }

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private function _saveResState($resState) {
        ksort($resState);
        $content = "<?phpnn$resState = array(n";
        foreach ($resState as $k => $v) {
            $content .= "t '$k' => '$v',n";
        }
        $content .= ");nn";
        file_put_contents($this->resStatePath, $content);
    }

——————————-调用$this->_saveResState($resState) 讲解end————————————————————-

拍卖完后,看看所生成的文书,这里一个文书会有七个版本,旧版本还未有删除掉,在开辟条件下删不删除都没难题,这里怎么不删除旧版本的压缩文件,那就提到到在更新四个应用服务器代码时所要注意的难点里。在这里作者就多讲授一点吧,简单地举个例证吗,平常大型项目中的静态财富和模板文件是计划在不一致的机械集群上的,上线的历程中,静态财富和页面文件的配备时间隔离恐怕会那二个长,对于三个特大型网络采取来讲纵然在多少个不大的时日间隔内,都有非常的大大概现身新顾客访谈,若是旧版本的静态能源删除了,但新本子的静态财富尚未安顿造成,那么顾客就加载不到该静态能源,结果由此可见,所以,经常意况下我们会保留旧版本的静态财富,然后等富有片段铺排到位了,再经过一定的本子删除掉也没提到,其实,那一个不必删除也是可以的,你思虑,二个类别发二遍版本,才会调用一遍财富文件减弱方法,它只会对更订正的公文举行生成新版本号的静态文件而已。那么些就看个人的做法了。

美高梅手机登录网站 5

咱俩得以张开看看,下边那些就是减掉后的文书的代码了,文件原大小为16K,压缩后大致少了5K,未来是11K,压缩比大概是2/3,要是在大型项目中,多少个复杂点的页面会有极大的静态能源文件要加载,通过此办法,大大地增加了加载的快慢。(也许有一些朋友以为压缩个几K可能十几K算什么,完全能够忽略,其实本身想说的是,当您在大型项目中优化品种的时候,能够缩小几K的代码,也给网址的性质升高了一大截)

美高梅手机登录网站 6

到此,能源减弱管理就分析完成了。其实,有必然基础的意中人,能够直接看小编享受的万分代码就足以了,假设通晓不了,再看本人上边这一步步的深入分析传授,小编是高居能看过来此博客的相爱的人,无论手艺是好或然是稍弱,都能看懂,所以才对代码一步步地拓宽剖析传授。(希望各位多多指教小叔子)

————————————————————————————————————————-

  1. 接下去就是上课如何替换压缩后的财富文件了。

这个到Home.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Home extends MY_Controller { public function index() { $this->smartyData['test'] = 111; //那个暗许是加载 www/css/home/index.css文件 $this->addResLink('index.css'); //这几个暗许是加载www/js/jquery.all.min.js文件 $this->addResLink('/jquery.all.min.js'); //那个默许是加载www/js/index.js文件 $this->addResLink('index.js'); $this->displayView('home/index.tpl'); } }

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class Home extends MY_Controller {
    public function index() {
        $this->smartyData['test'] = 111;
        //这个默认是加载 www/css/home/index.css文件
        $this->addResLink('index.css');
        //这个默认是加载www/js/jquery.all.min.js文件
        $this->addResLink('/jquery.all.min.js');
        //这个默认是加载www/js/index.js文件
        $this->addResLink('index.js');
        $this->displayView('home/index.tpl');
    }
}

上边有加载四个能源文件,大家先看看$this->addResLink();那些主意,这几个主意放在My_Controller.php里:

PHP

/** * 能源路线 * @param [type] $filePath [description] */ protected function addResLink($filePath) { list($filePath, $query) = explode('?', $filePath . '?'); $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false === array_search($filePath, $this->_resLink[$extension])) { $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query; } } return $this; }

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/**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode('?', $filePath . '?');
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query;
            }
        }
 
        return $this;
    }

此地根本是决断了财富文件是css依然js,然后将其存放在 $this->_resLink那一个天性里。

那么这里作者就先附上My_Controller.php那么些父类的富有代码吧

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //压缩jscss能源文件 $this->compressResHandle(); } //==========================使用SMARTY模板引擎================================// /* 斯马特y母版页文件路线 */ protected $masterPage = 'default.tpl'; /* 视图像和文字件路径*/ protected $smartyView; /* 要赋值给smarty视图的数额*/ protected $smartyData = []; /* 资源文件*/ protected $_resLink = ['js'=>[], 'css'=>[]]; /** * 使用母版页输出多少个视图 * @return [type] [description] */ protected function displayView($viewName = null, $masterPage = null) { //为空则采用暗中同意母版 if ($masterPage == null) $masterPage = $this->masterPage; //获取视图的出口内容 $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage); $output = ''; //添加css Link foreach ($this->_resLink['css'] as $v) { $output .= res_link($v); } //内容部分 $output .= $viewContent; //尾巴部分增加js 链接 foreach ($this->_resLink['js'] as $v) { $output .= res_link($v); } //发送最终输出结果以致服务器的 HTTP 头到浏览器 $this->output->_display($output); return $output; } private function _fetchView($smartyData, &$viewName, &$masterPage) { if ($viewName == null) $viewName = $this->smartyView; if (empty($this->smarty)) { require_once SMARTY_DIEvoque.'斯马特y.class.php'; $this->smarty = new Smarty(); $this->smarty->setCompileDir(应用程式PATH . 'cache/'); $this->smarty->setCacheDir(应用程式PATH . 'cache/'); } //设置视图真实路线 $this->_getViewDir(true, $viewName, $masterPage, $templateDir); foreach ($smartyData as $k => $v) { $this->smarty->assign($k, $v); } if (empty($masterPage)) { return $this->smarty->fetch($viewName); } else { $this->smarty->assign('VIEW_MAIN', $viewName); return $this->smarty->fetch($masterPage); } } /** * 财富路线 * @param [type] $filePath [description] */ protected function addResLink($filePath) { list($filePath, $query) = explode('?', $filePath . '?'); $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false === array_search($filePath, $this->_resLink[$extension])) { $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query; } } return $this; } private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) { if ('/' === $viewName[0]) $viewName = substr($viewName, 1); //是不是使用模板,有,则路由到 /views/master_page/*****.tpl下去 if ($masterPage) { $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage); } //是还是不是设置模板目录 if ($setTemplateDir) { $templateDir = VIEWPATH; $this->smarty->setTemplateDir($templateDir); } } /** * 压缩js、css能源文件(优化) * @return [type] [description] */ private function compressResHandle() { $this->load->library('ResMinifier'); //压缩钦赐文件夹下的财富文件 $this->resminifier->compressRes(); } } 点击张开 My_Controller.php

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
 
    //==========================使用SMARTY模板引擎================================//
    /* Smarty母版页文件路径 */
    protected $masterPage = 'default.tpl';
    /* 视图文件路径*/
    protected $smartyView;
    /* 要赋值给smarty视图的数据*/
    protected $smartyData = [];
    /* 资源文件*/
    protected $_resLink = ['js'=>[], 'css'=>[]];
 
    /**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = '';
 
        //添加css Link
        foreach ($this->_resLink['css'] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink['js'] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.'Smarty.class.php';
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . 'cache/');
            $this->smarty->setCacheDir(APPPATH . 'cache/');
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign('VIEW_MAIN', $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }
 
    /**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode('?', $filePath . '?');
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query;
            }
        }
 
        return $this;
    }
 
    private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) {
        if ('/' === $viewName[0]) $viewName = substr($viewName, 1);
 
        //是否使用模板,有,则路由到 /views/master_page/*****.tpl下去
        if ($masterPage) {
            $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage);
        }
 
        //是否设置模板目录
        if ($setTemplateDir) {
            $templateDir = VIEWPATH;
            $this->smarty->setTemplateDir($templateDir);
        }
    }
 
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library('ResMinifier');
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}
 
点击打开 My_Controller.php

打印出来 $this->_resLink这一个性格的构造是那样子的:

PHP

Array ( [js] => Array ( [0] => /jquery.all.min.js [1] => index.js ) [css] => Array ( [0] => index.css ) )

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Array
(
    [js] => Array
        (
            [0] => /jquery.all.min.js
            [1] => index.js
        )
 
    [css] => Array
        (
            [0] => index.css
        )
 
)

再回到Home.php里面调用 $this->displayView(‘home/index.tpl’);

小编们看那几个格局:

PHP

/** * 使用母版页输出三个视图 * @return [type] [description] */ protected function displayView($viewName = null, $masterPage = null) { //为空则选择私下认可母版 if ($masterPage == null) $masterPage = $this->masterPage; //获取视图的出口内容 $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage); $output = ''; //添加css Link foreach ($this->_resLink['css'] as $v) { $output .= res_link($v); } //内容部分 $output .= $viewContent; //尾巴部分增多js 链接 foreach ($this->_resLink['js'] as $v) { $output .= res_link($v); } //发送最后输出结果以致服务器的 HTTP 头到浏览器 $this->output->_display($output); return $output; } private function _fetchView($smartyData, &$viewName, &$masterPage) { if ($viewName == null) $viewName = $this->smartyView; if (empty($this->smarty)) { require_once SMARTY_DI奥迪Q7.'斯玛特y.class.php'; $this->smarty = new Smarty(); $this->smarty->setCompileDir(APPPATH . 'cache/'); $this->smarty->setCacheDir(应用程式PATH . 'cache/'); } //设置视图真实路线 $this->_getViewDir(true, $viewName, $masterPage, $templateDir); foreach ($smartyData as $k => $v) { $this->smarty->assign($k, $v); } if (empty($masterPage)) { return $this->smarty->fetch($viewName); } else { $this->smarty->assign('VIEW_MAIN', $viewName); return $this->smarty->fetch($masterPage); } }

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/**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = '';
 
        //添加css Link
        foreach ($this->_resLink['css'] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink['js'] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.'Smarty.class.php';
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . 'cache/');
            $this->smarty->setCacheDir(APPPATH . 'cache/');
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign('VIEW_MAIN', $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }

那意气风发段代码未有生机勃勃部分正是调用了斯马特y模板引擎的剧情,那些关于斯马特y的知识小编就不讲了,大家能够友善百度,这里根本讲 res_link() 这些函数,就是通过那么些函数来进展财富文件替换的。先看这一个函数的代码:

PHP

/** * 输出 HttpHead 中的财富总是。 css/js 自动剖断真实路线 * @param string 文件路线 * @return string */ function res_link($file) { $file = res_path($file, $extension); if ($extension === 'css') { return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>'; } else if ($extension === 'js') { return '<script type="text/javascript" src="'.$file.'"></script>'; } else { return false; } }

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/**
     * 输出 HttpHead 中的资源连接。 css/js 自动判断真实路径
     * @param  string  文件路径
     * @return string      
     */
    function res_link($file) {
        $file = res_path($file, $extension);
 
        if ($extension === 'css') {
           return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>';
        } else if ($extension === 'js') {
            return '<script type="text/javascript" src="'.$file.'"></script>';
        } else {
            return false;
        }
    }

此处最重大正是 res_path() 函数了,这些函数能自行路由能源的踏踏实实路线。举个例子:index.css = > css/home/index.css

该函数最重大的二个成效是替换财富的压缩版本。

一向看代码:

PHP

/** * 智能路由能源实际路线 * @param string 路径 * @param string 扩展名 * @return string 真实路线 */ function res_path($file, &$extension) { //检查是还是不是留存询问字符串 list($file, $query) = explode('?', $file . '?'); //取得扩张名 $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION)); // $file = str_replace('\', '/', $file); //取稳当前调节器名 global $class; if ($class == null) exit('can not get class name'); $className = strtolower($class); //此处的法则是这么: //例如,固然不加 / ,Home调节器对应的格式是: index.css,那么 此处的路线会形成css/home/index.css //假诺有 / ,调控器的格式可以是 /main.css,那么这里的路线会变成 css/main.css(公用的css类) if ('/' !== $file[0]) { //index.css => css/home/index.css $object = $extension .'/'. $className .'/' . $file; } else { // /css/main.css 恐怕 /main.css => css/main.css $object = substr($file, 1); //若object是 main.css ,则自动抬高 扩大名目录 => css/main.css if (0 !== strncasecmp($extension, $object, strlen($extension))) { $object = $extension . '/' . $object; } } //财富真实路线 $filepath = WEBROOT.'www/'.$object; //替换压缩版本,那黄金时代部分逻辑与公事减少逻辑对应 if (in_array($extension, array('css', 'js'))) { if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) { require_once 应用程式PATH.'libraries/ResMinifier.php'; $resminifier = new ResMinifier(); //获取存放财富版本的公文的数组变量 $resState = $resminifier->getResState(); //计算取安妥前文件版本号 $state = $resminifier->_getResStateVersion($filepath); //判别该版本号是不是存在 if (isset($resState[$object])) { //剖断是不是是.min.css或.min.js结尾 if (str_end_with($object, '.min.'.$extension)) { //将版本号拼接上去,然后拿走min的文件路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension; } else { //将版本号拼接上去,然后拿走min的公文路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; } //判定min的渠道是或不是留存在$resState里面 if (isset($resState[$minObject])) { $object = $minObject; $query = ''; } } } $file = RES_BASE_URL . $object; } return ($query == null) ? $file : ($file .'?'. $query); }

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/**
     * 智能路由资源真实路径
     * @param  string      路径
     * @param  string      扩展名
     * @return string       真实路径
     */
    function res_path($file, &$extension) {
        //检查是否存在查询字符串
        list($file, $query) = explode('?', $file . '?');
        //取得扩展名
        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
        //
        $file = str_replace('\', '/', $file);
        //取得当前控制器名
        global $class;
        if ($class == null) exit('can not get class name');
        $className = strtolower($class);
 
        //此处的规则是这样:
        //例如,如果不加 / ,Home控制器对应的格式是: index.css,那么 此处的路径会变成css/home/index.css
        //假如有 / ,控制器的格式可以是 /main.css,那么此处的路径会变成 css/main.css(公用的css类)
        if ('/' !== $file[0]) {
            //index.css => css/home/index.css
            $object = $extension .'/'. $className .'/' . $file;
        } else {
            // /css/main.css 或者 /main.css => css/main.css
            $object = substr($file, 1);
 
            //若object是 main.css ,则自动加上 扩展名目录 => css/main.css
            if (0 !== strncasecmp($extension, $object, strlen($extension))) {
                $object = $extension . '/' . $object;
            }
        }
        //资源真实路径
        $filepath = WEBROOT.'www/'.$object;
 
        //替换压缩版本,这部分逻辑与文件压缩逻辑对应
        if (in_array($extension, array('css', 'js'))) {
            if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) {
                require_once APPPATH.'libraries/ResMinifier.php';
                $resminifier = new ResMinifier();
                //获取存放资源版本的文件的数组变量
                $resState = $resminifier->getResState();
                //计算得到当前文件版本号
                $state = $resminifier->_getResStateVersion($filepath);
                //判断该版本号是否存在
                if (isset($resState[$object])) {
                    //判断是否是.min.css或.min.js结尾
                    if (str_end_with($object, '.min.'.$extension)) {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension;
                    } else {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
                    }
                    //判断min的路径是否存在在$resState里面
                     if (isset($resState[$minObject])) {
                        $object = $minObject;
                        $query = '';
                     }
                }
 
            }
 
            $file = RES_BASE_URL . $object;
        }
 
        return ($query == null) ? $file : ($file .'?'. $query);
 
    }

代码基本上都给了讲授,方便大家轻松去精晓,前边一部分是智能路线css、js能源的路径,前边风流倜傥部分是替换压缩版本,那后生可畏有个其他逻辑其实和能源减少这里的逻辑基本均等,就是通过财富文件路线,实行判定和管理,最终得到能源的削减版本的门径,最终就将财富的压缩版本的途径再次回到去,放在'<link rel=”stylesheet” type=”text/css” href=”‘ . $file . ‘”/>’里面。那样  ,就水到渠成地将能源文件路线替换来了减削版本的财富文件路线,而且在模板输出时,输出的是减弱后的能源文件。

到此,能源替换的开始和结果就到此批注甘休。而整大器晚成项手艺也深入分析到此。

三、总结

在这里边作者集中地附着本博文讲明中的多少个公文代码:

Home.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Home extends MY_Controller { public function index() { $this->smartyData['test'] = 111; //那么些暗中认可是加载 www/css/home/index.css文件 $this->addResLink('index.css'); //这么些暗中同意是加载www/js/jquery.all.min.js文件 $this->addResLink('/jquery.all.min.js'); //这些暗中认可是加载www/js/index.js文件 $this->addResLink('index.js'); $this->displayView('home/index.tpl'); } } 点击展开

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class Home extends MY_Controller {
    public function index() {
        $this->smartyData['test'] = 111;
        //这个默认是加载 www/css/home/index.css文件
        $this->addResLink('index.css');
        //这个默认是加载www/js/jquery.all.min.js文件
        $this->addResLink('/jquery.all.min.js');
        //这个默认是加载www/js/index.js文件
        $this->addResLink('index.js');
        $this->displayView('home/index.tpl');
    }
}
 
点击打开

My_Controller.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //压缩jscss能源文件 $this->compressResHandle(); } //==========================使用SMARTY模板引擎================================// /* 斯马特y母版页文件路线 */ protected $masterPage = 'default.tpl'; /* 视图像和文字件路线*/ protected $smartyView; /* 要赋值给smarty视图的数额*/ protected $smartyData = []; /* 能源文件*/ protected $_resLink = ['js'=>[], 'css'=>[]]; /** * 使用母版页输出三个视图 * @return [type] [description] */ protected function displayView($viewName = null, $masterPage = null) { //为空则采取暗中认可母版 if ($masterPage == null) $masterPage = $this->masterPage; //获取视图的出口内容 $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage); $output = ''; //添加css Link foreach ($this->_resLink['css'] as $v) { $output .= res_link($v); } //内容部分 $output .= $viewContent; //后面部分增加js 链接 foreach ($this->_resLink['js'] as $v) { $output .= res_link($v); } //发送最终输出结果甚至服务器的 HTTP 头到浏览器 $this->output->_display($output); return $output; } private function _fetchView($smartyData, &$viewName, &$masterPage) { if ($viewName == null) $viewName = $this->smartyView; if (empty($this->smarty)) { require_once SMARTY_DISportage.'斯马特y.class.php'; $this->smarty = new 斯马特y(); $this->smarty->setCompileDir(应用软件PATH . 'cache/'); $this->smarty->setCacheDir(APPPATH . 'cache/'); } //设置视图真实路线 $this->_getViewDir(true, $viewName, $masterPage, $templateDir); foreach ($smartyData as $k => $v) { $this->smarty->assign($k, $v); } if (empty($masterPage)) { return $this->smarty->fetch($viewName); } else { $this->smarty->assign('VIEW_MAIN', $viewName); return $this->smarty->fetch($masterPage); } } /** * 能源路线 * @param [type] $filePath [description] */ protected function addResLink($filePath) { list($filePath, $query) = explode('?', $filePath . '?'); $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false === array_search($filePath, $this->_resLink[$extension])) { $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query; } } return $this; } private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) { if ('/' === $viewName[0]) $viewName = substr($viewName, 1); //是不是使用模板,有,则路由到 /views/master_page/*****.tpl下去 if ($masterPage) { $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage); } //是不是设置模板目录 if ($setTemplateDir) { $templateDir = VIEWPATH; $this->smarty->setTemplateDir($templateDir); } } /** * 压缩js、css财富文件(优化) * @return [type] [description] */ private function compressResHandle() { $this->load->library('ResMinifier'); //压缩钦点文件夹下的财富文件 $this->resminifier->compressRes(); } } 点击展开

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
 
    //==========================使用SMARTY模板引擎================================//
    /* Smarty母版页文件路径 */
    protected $masterPage = 'default.tpl';
    /* 视图文件路径*/
    protected $smartyView;
    /* 要赋值给smarty视图的数据*/
    protected $smartyData = [];
    /* 资源文件*/
    protected $_resLink = ['js'=>[], 'css'=>[]];
 
    /**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = '';
 
        //添加css Link
        foreach ($this->_resLink['css'] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink['js'] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.'Smarty.class.php';
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . 'cache/');
            $this->smarty->setCacheDir(APPPATH . 'cache/');
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign('VIEW_MAIN', $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }
 
    /**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode('?', $filePath . '?');
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query;
            }
        }
 
        return $this;
    }
 
    private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) {
        if ('/' === $viewName[0]) $viewName = substr($viewName, 1);
 
        //是否使用模板,有,则路由到 /views/master_page/*****.tpl下去
        if ($masterPage) {
            $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage);
        }
 
        //是否设置模板目录
        if ($setTemplateDir) {
            $templateDir = VIEWPATH;
            $this->smarty->setTemplateDir($templateDir);
        }
    }
 
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library('ResMinifier');
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}
 
点击打开

ResMinifier.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); /** * 财富压缩类 */ class ResMinifier { /** 需求减小的财富目录*/ public $compressResDir = ['css', 'js']; /** 忽略压缩的路子,举个例子此处是js/icon起头的不二诀窍忽略压缩*/ public $compressResIngorePrefix = ['js/icon']; /** 财富根目录*/ public $resRootDir; /** 财富版本文件路线*/ private $resStatePath; public function __construct() { $this->resRootDir = WEBROOT . 'www/'; $this->resStatePath = WEBROOT . 'www/resState.php'; } public function compressRes() { //获取存放版本的能源文件 $resState = $this->getResState(); $count = 0; //开始遍历须要减小的财富目录 foreach ($this->compressResDir as $resDir) { foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) { //获取该能源文件的相对路径$filePath = str_replace('\', '/', $file->getRealPath()); //获取文件相对路线 $object = substr($filePath, strlen($this->resRootDir)); //总计文件的本子号 $state = $this->_getResStateVersion($file帕特h); //获取文件的多少个参数值 if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) { continue; } //压缩文件的绝对路径 $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject); //************此处p决断是最重大片段之生机勃勃*****************// //剖断文件是还是不是留存且已经转移过 if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) { continue; } //确定保障/www/min/目录可写 $this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress) { $this->compressResFileAndSave($filePath, $minFilePath); } else { copy($filePath, $minFilePath); } $resState[$object] = $state; $resState[$minObject] = ''; $count++; if ($count == 50) { $this->_saveResState($resState); $count = 0; } } } if($count) $this->_saveResState($resState); } /** * 获取能源文件有关新闻 * @param [type] $object 财富文件路线 (www/css/home/index.css) * @param [type] $minObject 压缩能源文件路线 (www/min/css/home/index.ae123a.css) * @param [type] $needCompress 是不是要求压缩 * @param [type] $state 文件版本号 * @param [type] $extension 文件名后缀 * @return [type] [description] */ public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) { //获取财富相对路线 $filePath = $this->resRootDir . $object; //剖断能源是还是不是留存 if (!file_exists($file帕特h)) return "能源文件一纸空文{$file帕特h}"; //版本号 $state = $this-> _getResStateVersion($filePath); //文件名后缀 $extension = pathinfo($file帕特h, PATHINFO_EXTENSION); //是还是不是要缩减$needCompress = true; //推断能源文件是或不是是以 .min.css可能.min.js结尾的 //此类结尾平日都以已回退过,举例jquery.min.js,就没有必要再压缩了 if (str_end_with($object, '.min.'.$extension, true)) { //压缩后的能源贮存路线,放在 /www/min/ 目录下 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension; $needCompress = false; } else if (in_array($extension, $this->compressResDir)) { //此处是亟需减弱的文件目录 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; //看看是还是不是是忽视的门径前缀 foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } } } else { $minObject = 'min/'.$object; $needCompress = false; } return true; } /** * 获取寄放财富版本的文本 * 它是位于一个数组里 * $resState = array( * '文件路线' => '对应的本子号', * '文件路线' => '对应的版本号', * '文件路径' => '对应的本子号', * ); * @return [type] [description] */ public function getResState() { if (file_exists($this->resStatePath)) { require $this->resStatePath; return $resState; } return []; } /** * 计算文件的版本号,那么些是依据测算文件MD5散列值获得版本号 * 只要文件内容更换了,所总括获得的散列值就能够不形似 * 用于判定财富文件是不是有改换过 * @param [type] $filePath [description] * @return [type] [description] */ public function _getResStateVersion($filePath) { return base_convert(crc32(md5_file($filePath)), 10, 36); } /** * 确认保障目录可写 * @param [type] $dir [description] * @return [type] [description] */ private function _ensureWritableDir($dir) { if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if (!is_writable($dir)) { show_error('目录'.$dir.'不可写'); } } } /** * 将减少后的能源文件写入到/www/min/下去 * @param [type] $filePath [description] * @param [type] $minFilePath [description] * @return [type] [description] */ private function compressResFileAndSave($filePath, $minFilePath) { if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) { //$CI->exceptions->show_exception("写入文件{$minFilePath}退步"); show_error("写入文件{$minFile帕特h}战败", -1); } } /** * 压缩财富文件 * @param [type] $filePath [description] * @return [type] [description] */ private function compressResFile($filePath) { $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if ($extension === 'js') { require_once 'JShrink/Minifier.php'; return JShrinkMinifier::minify(file_get_contents($filePath)); } else if ($extension ==='css') { $content = file_get_contents($filePath); $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content); $content = str_replace(["rn", "r", "n"], '', $content); $content = preg_replace('/([{}),;:>])s+/', '$1', $content); $content = preg_replace('/s+([{}),;:>])/', '$1', $content); $content = str_replace(';}', '}', $content); return $content; } else { //$CI->exceptions->show_exception("不匡助压缩{extension}文件[$filePath]"); show_error("不扶植压缩{extension}文件[$filePath]", -1); } } private function _saveResState($resState) { ksort($resState); $content = "<?phpnn$resState = array(n"; foreach ($resState as $k => $v) { $content .= "t '$k' => '$v',n"; } $content .= ");nn"; file_put_contents($this->resStatePath, $content); } } 点击展开

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* 资源压缩类
*/
class ResMinifier {
    /** 需要压缩的资源目录*/
    public $compressResDir = ['css', 'js'];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = ['js/icon'];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . 'www/';
        $this->resStatePath = WEBROOT . 'www/resState.php';
    }
 
    public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;
 
        //开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace('\', '/', $file->getRealPath());
 
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
 
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);
 
                //获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }
 
                //压缩文件的绝对路径
                $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }
 
                //确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }
 
                $resState[$object] = $state;
                $resState[$minObject] = '';
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);
    }
 
    /**
     * 获取资源文件相关信息
     * @param  [type] $object       资源文件路径 (www/css/home/index.css)
     * @param  [type] $minObject    压缩资源文件路径 (www/min/css/home/index.ae123a.css)
     * @param  [type] $needCompress 是否需要压缩
     * @param  [type] $state        文件版本号
     * @param  [type] $extension    文件名后缀
     * @return [type]               [description]
     */
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, '.min.'.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = 'min/'.$object;
            $needCompress = false;
        }
        return true;
    }
 
    /**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }
 
    /**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }
 
    /**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error('目录'.$dir.'不可写');
            }
        }
    }
 
    /**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === 'js') {
            require_once 'JShrink/Minifier.php';
            return JShrinkMinifier::minify(file_get_contents($filePath));
        } else if ($extension ==='css') {
            $content = file_get_contents($filePath);
            $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content);
            $content = str_replace(["rn", "r", "n"], '', $content);
            $content = preg_replace('/([{}),;:>])s+/', '$1', $content);
            $content = preg_replace('/s+([{}),;:>])/', '$1', $content);
            $content = str_replace(';}', '}', $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }
 
    private function _saveResState($resState) {
        ksort($resState);
        $content = "<?phpnn$resState = array(n";
        foreach ($resState as $k => $v) {
            $content .= "t '$k' => '$v',n";
        }
        $content .= ");nn";
        file_put_contents($this->resStatePath, $content);
    }
 
}
 
点击打开

Common.php

PHP

<?php /** * 输出 HttpHead 中的财富总是。 css/js 自动决断真实路线 * @param string 文件路线 * @return string */ function res_link($file) { $file = res_path($file, $extension); if ($extension === 'css') { return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>'; } else if ($extension === 'js') { return '<script type="text/javascript" src="'.$file.'"></script>'; } else { return false; } } /** * 智能路由能源实际路线 * @param string 路径 * @param string 扩展名 * @return string 真实路线 */ function res_path($file, &$extension) { //检查是还是不是留存询问字符串 list($file, $query) = explode('?', $file . '?'); //获得扩大名 $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION)); // $file = str_replace('\', '/', $file); //取稳妥前调控器名 global $class; if ($class == null) exit('can not get class name'); $className = strtolower($class); //此处的规行矩步是这么: //比方,假如不加 / ,Home调节器对应的格式是: index.css,那么 此处的路径会形成css/home/index.css //假如有 / ,调整器的格式能够是 /main.css,那么这里的路线会产生 css/main.css(公用的css类) if ('/' !== $file[0]) { //index.css => css/home/index.css $object = $extension .'/'. $className .'/' . $file; } else { // /css/main.css 或然 /main.css => css/main.css $object = substr($file, 1); //若object是 main.css ,则自动抬高 扩充名目录 => css/main.css if (0 !== strncasecmp($extension, $object, strlen($extension))) { $object = $extension . '/' . $object; } } //能源真实路线 $filepath = WEBROOT.'www/'.$object; //替换压缩版本,那风流浪漫部分逻辑与公事减弱逻辑对应 if (in_array($extension, array('css', 'js'))) { if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) { require_once 应用软件PATH.'libraries/ResMinifier.php'; $resminifier = new ResMinifier(); //获取存放能源版本的文本的数组变量 $resState = $resminifier->getResState(); //总结取妥善前文件版本号 $state = $resminifier->_getResStateVersion($filepath); //判定该版本号是还是不是留存 if (isset($resState[$object])) { //判别是还是不是是.min.css或.min.js结尾 if (str_end_with($object, '.min.'.$extension)) { //将版本号拼接上去,然后拿走min的文书路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension; } else { //将版本号拼接上去,然后拿走min的公文路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; } //决断min的路线是不是留存在$resState里面 if (isset($resState[$minObject])) { $object = $minObject; $query = ''; } } } $file = RES_BASE_URL . $object; } return ($query == null) ? $file : ($file .'?'. $query); } /** * 判别 subject 是或不是以 search先河, 参数钦赐是或不是忽视大小写 * @param [type] $subject [description] * @param [type] $search [description] * @param boolean $ignore_case [description] * @return [type] [description] */ function str_start_with($subject, $search, $ignore_case = false) { $len2 = strlen($search); if (0 === $len2) return true; $len1 = strlen($subject); if ($len1 < $len2) return false; if ($ignore_case) { return 0 === strncmp($subject, $search, $len2); } else { return 0 === strncasecmp($subject, $search, $len2); } } /** * 判定 subject 是还是不是以 search结尾, 参数钦命是不是忽视大小写 * @param [type] $subject [description] * @param [type] $search [description] * @param boolean $ignore_case [description] * @return [type] [description] */ function str_end_with($subject, $search, $ignore_case = false) { $len2 = strlen($search); if (0 === $len2) return true; $len1 = strlen($subject); if ($len2 > $len1) return false; if ($ignore_case) { return 0 === strcmp(substr($subject, $len1 - $len2), $search); } else { return 0 === strcasecmp(substr($subject, $len1 - $len2), $search); } } 点击展开

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<?php
    /**
     * 输出 HttpHead 中的资源连接。 css/js 自动判断真实路径
     * @param  string  文件路径
     * @return string      
     */
    function res_link($file) {
        $file = res_path($file, $extension);
 
        if ($extension === 'css') {
           return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>';
        } else if ($extension === 'js') {
            return '<script type="text/javascript" src="'.$file.'"></script>';
        } else {
            return false;
        }
    }
 
    /**
     * 智能路由资源真实路径
     * @param  string      路径
     * @param  string      扩展名
     * @return string       真实路径
     */
    function res_path($file, &$extension) {
        //检查是否存在查询字符串
        list($file, $query) = explode('?', $file . '?');
        //取得扩展名
        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
        //
        $file = str_replace('\', '/', $file);
        //取得当前控制器名
        global $class;
        if ($class == null) exit('can not get class name');
        $className = strtolower($class);
 
        //此处的规则是这样:
        //例如,如果不加 / ,Home控制器对应的格式是: index.css,那么 此处的路径会变成css/home/index.css
        //假如有 / ,控制器的格式可以是 /main.css,那么此处的路径会变成 css/main.css(公用的css类)
        if ('/' !== $file[0]) {
            //index.css => css/home/index.css
            $object = $extension .'/'. $className .'/' . $file;
        } else {
            // /css/main.css 或者 /main.css => css/main.css
            $object = substr($file, 1);
 
            //若object是 main.css ,则自动加上 扩展名目录 => css/main.css
            if (0 !== strncasecmp($extension, $object, strlen($extension))) {
                $object = $extension . '/' . $object;
            }
        }
        //资源真实路径
        $filepath = WEBROOT.'www/'.$object;
 
        //替换压缩版本,这部分逻辑与文件压缩逻辑对应
        if (in_array($extension, array('css', 'js'))) {
            if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) {
                require_once APPPATH.'libraries/ResMinifier.php';
                $resminifier = new ResMinifier();
                //获取存放资源版本的文件的数组变量
                $resState = $resminifier->getResState();
                //计算得到当前文件版本号
                $state = $resminifier->_getResStateVersion($filepath);
                //判断该版本号是否存在
                if (isset($resState[$object])) {
                    //判断是否是.min.css或.min.js结尾
                    if (str_end_with($object, '.min.'.$extension)) {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension;
                    } else {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
                    }
                    //判断min的路径是否存在在$resState里面
                     if (isset($resState[$minObject])) {
                        $object = $minObject;
                        $query = '';
                     }
                }
 
            }
 
            $file = RES_BASE_URL . $object;
        }
 
        return ($query == null) ? $file : ($file .'?'. $query);
 
    }
 
    /**
     * 判断 subject 是否以 search开头, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_start_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len1 < $len2) return false;
        if ($ignore_case) {
            return 0 === strncmp($subject, $search, $len2);
        } else {
            return 0 === strncasecmp($subject, $search, $len2);
        }
    }
 
    /**
     * 判断 subject 是否以 search结尾, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_end_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len2 > $len1) return false;
        if ($ignore_case) {
            return 0 === strcmp(substr($subject, $len1 - $len2), $search);
        } else {
            return 0 === strcasecmp(substr($subject, $len1 - $len2), $search);
        }
    }
 
点击打开

$resState.php(里面包车型客车代码是自动生成的)

XHTML

<?php $resState = array( 'css/home/index.css' => 'gwy933', 'js/echarts-all.min.js' => 'wqrf1c', 'js/home/index.js' => 's2z6f5', 'js/icon.js' => 'pgcyih', 'js/icon_home.js' => 'zhl9iu', 'js/ion.rangeSlider.min.js' => 'akq381', 'js/jquery-ui-autocomplete.js' => '8nzacv', 'js/jquery-ui.min.js' => 'i6tw8z', 'js/jquery.all.min.js' => 'd2w76v', 'js/jquery.city.js' => 'toxdrf', 'js/jquery.easydropdown.min.js' => '2ni3i0', 'js/jquery.matrix.js' => '3vrqkk', 'js/jquery.mobile.all.min.js' => 'ernu7r', 'js/jquery.qrcode.min.js' => 'yuhnsj', 'js/jquery.tinyscrollbar.min.js' => 'oakk3c', 'js/mobiscroll.custom.min.js' => 'kn8h2e', 'js/store.min.js' => 'n50jwr', 'js/swiper.animate1.0.2.min.js' => 'mm27zc', 'js/swiper.min.js' => 'jicwhh', 'min/css/home/index.6a4e83eb.css' => '', 'min/css/home/index.gwy933.css' => '', 'min/css/home/index.puzbnf.css' => '', 'min/css/home/index.thv8x7.css' => '', 'min/js/echarts-all.76025ee0.js' => '', 'min/js/echarts-all.wqrf1c.js' => '', 'min/js/home/index.65363d41.js' => '', 'min/js/home/index.s2z6f5.js' => '', 'min/js/icon.5bbd4db9.js' => '', 'min/js/icon.pgcyih.js' => '', 'min/js/icon_home.7fe74076.js' => '', 'min/js/icon_home.zhl9iu.js' => '', 'min/js/ion.rangeSlider.261d8ed1.js' => '', 'min/js/ion.rangeSlider.akq381.js' => '', 'min/js/jquery-ui-autocomplete.1f3bb62f.js' => '', 'min/js/jquery-ui-autocomplete.8nzacv.js' => '', 'min/js/jquery-ui.418e9683.js' => '', 'min/js/jquery-ui.i6tw8z.js' => '', 'min/js/jquery.all.2f248267.js' => '', 'min/js/jquery.all.d2w76v.js' => '', 'min/js/jquery.city.6b036feb.js' => '', 'min/js/jquery.city.toxdrf.js' => '', 'min/js/jquery.easydropdown.2ni3i0.js' => '', 'min/js/jquery.easydropdown.98fa138.js' => '', 'min/js/jquery.matrix.3vrqkk.js' => '', 'min/js/jquery.matrix.dfe2a44.js' => '', 'min/js/jquery.mobile.all.3539ebb7.js' => '', 'min/js/jquery.mobile.all.ernu7r.js' => '', 'min/js/jquery.qrcode.7d9738b3.js' => '', 'min/js/jquery.qrcode.yuhnsj.js' => '', 'min/js/jquery.tinyscrollbar.578e4cb8.js' => '', 'min/js/jquery.tinyscrollbar.oakk3c.js' => '', 'min/js/mobiscroll.custom.4a684f66.js' => '', 'min/js/mobiscroll.custom.kn8h2e.js' => '', 'min/js/store.536545cb.js' => '', 'min/js/store.n50jwr.js' => '', 'min/js/swiper.4650ad75.js' => '', 'min/js/swiper.animate1.0.2.517f82e8.js' => '', 'min/js/swiper.animate1.0.2.mm27zc.js' => '', 'min/js/swiper.jicwhh.js' => '', ); 点击展开

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<?php
 
$resState = array(
     'css/home/index.css' => 'gwy933',
     'js/echarts-all.min.js' => 'wqrf1c',
     'js/home/index.js' => 's2z6f5',
     'js/icon.js' => 'pgcyih',
     'js/icon_home.js' => 'zhl9iu',
     'js/ion.rangeSlider.min.js' => 'akq381',
     'js/jquery-ui-autocomplete.js' => '8nzacv',
     'js/jquery-ui.min.js' => 'i6tw8z',
     'js/jquery.all.min.js' => 'd2w76v',
     'js/jquery.city.js' => 'toxdrf',
     'js/jquery.easydropdown.min.js' => '2ni3i0',
     'js/jquery.matrix.js' => '3vrqkk',
     'js/jquery.mobile.all.min.js' => 'ernu7r',
     'js/jquery.qrcode.min.js' => 'yuhnsj',
     'js/jquery.tinyscrollbar.min.js' => 'oakk3c',
     'js/mobiscroll.custom.min.js' => 'kn8h2e',
     'js/store.min.js' => 'n50jwr',
     'js/swiper.animate1.0.2.min.js' => 'mm27zc',
     'js/swiper.min.js' => 'jicwhh',
     'min/css/home/index.6a4e83eb.css' => '',
     'min/css/home/index.gwy933.css' => '',
     'min/css/home/index.puzbnf.css' => '',
     'min/css/home/index.thv8x7.css' => '',
     'min/js/echarts-all.76025ee0.js' => '',
     'min/js/echarts-all.wqrf1c.js' => '',
     'min/js/home/index.65363d41.js' => '',
     'min/js/home/index.s2z6f5.js' => '',
     'min/js/icon.5bbd4db9.js' => '',
     'min/js/icon.pgcyih.js' => '',
     'min/js/icon_home.7fe74076.js' => '',
     'min/js/icon_home.zhl9iu.js' => '',
     'min/js/ion.rangeSlider.261d8ed1.js' => '',
     'min/js/ion.rangeSlider.akq381.js' => '',
     'min/js/jquery-ui-autocomplete.1f3bb62f.js' => '',
     'min/js/jquery-ui-autocomplete.8nzacv.js' => '',
     'min/js/jquery-ui.418e9683.js' => '',
     'min/js/jquery-ui.i6tw8z.js' => '',
     'min/js/jquery.all.2f248267.js' => '',
     'min/js/jquery.all.d2w76v.js' => '',
     'min/js/jquery.city.6b036feb.js' => '',
     'min/js/jquery.city.toxdrf.js' => '',
     'min/js/jquery.easydropdown.2ni3i0.js' => '',
     'min/js/jquery.easydropdown.98fa138.js' => '',
     'min/js/jquery.matrix.3vrqkk.js' => '',
     'min/js/jquery.matrix.dfe2a44.js' => '',
     'min/js/jquery.mobile.all.3539ebb7.js' => '',
     'min/js/jquery.mobile.all.ernu7r.js' => '',
     'min/js/jquery.qrcode.7d9738b3.js' => '',
     'min/js/jquery.qrcode.yuhnsj.js' => '',
     'min/js/jquery.tinyscrollbar.578e4cb8.js' => '',
     'min/js/jquery.tinyscrollbar.oakk3c.js' => '',
     'min/js/mobiscroll.custom.4a684f66.js' => '',
     'min/js/mobiscroll.custom.kn8h2e.js' => '',
     'min/js/store.536545cb.js' => '',
     'min/js/store.n50jwr.js' => '',
     'min/js/swiper.4650ad75.js' => '',
     'min/js/swiper.animate1.0.2.517f82e8.js' => '',
     'min/js/swiper.animate1.0.2.mm27zc.js' => '',
     'min/js/swiper.jicwhh.js' => '',
);
 
点击打开

 

其它附上JShrink那个PHP类的链接给大家下载 

设若大家要么感到非常不足OK的话,我直接将那么些实验项目打包供大家下载下来学习和询问:

四、结语

聊到底笔者来分享大家线上系列的求实完成方案:

咱俩的类别分线上意况、开辟处境和测量检验情形,在开荒和测验情形中,大家每三次访谈都会调用压缩文件的接口,然后再对转移的资源文件的深浅是要做剖断的,假如减少后文件过小,就供给将该能源文件的代码合并到别的能源文件里去,以此减弱不须要的HTTP诉求(因为文件太小,能源的下载时间远远小于HTTP必要响应所开销的年月);另二个是图片的拍卖,全部图片都要经过压缩技巧经过(比方在:  那一个网址去收缩图片),在PC端,假如是小Logo的话,使用图片合併的措施展开优化,详细情形可参看本身的那篇博文:http://www.cnblogs.com/it-cen/p/4618954.html    而在wap端的图纸管理利用的是base64编码形式来拍卖图片,实际情况能够参见自身的那篇博文:  ,当页面输出时,会选择redis来缓存页面(为何用内部存款和储蓄器来缓存并非使用页面缓存,那一个现在再享受给大家)。假使是线上情形,每发贰回版本,才会调用一下财富文件缩小那个接口,况且线上的静态财富(css、js、图片)是寄放在在Ali云的OSS里的,与咱们的应用服务器是分其余。那是大家线上项目标生龙活虎有的优化应用方案,当然了,还会有更加的多优化技能,小编会在今后各样总括和享受出去,方便大家一同学习和沟通。

此次博文就享受到此,多谢观察此博文的心上大家。

1 赞 1 收藏 评论

美高梅手机登录网站 7

文本上传例子

 代码如下

<?php
header('content-type:text/html;charset=utf-8');
require('uploadFile.php');

if(isset($_POST['submit'])){
$uploads = $_FILES['file'];
$num_file = count($uploads['name']);

$up = new UploadFile($uploads,'uploads',1024);
$num = $up->upload();

if($num == $num_file ){
echo '全部文本上传成功';
exit;
}else{
echo $num,'个文件上传成功<br/>';
echo $up->showErrorInfo();
exit;
}
}

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ";
<html xmlns=" 1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文书档案</title>
</head>

<body>
<form action="uup.php" method="post" enctype="multipart/form-data">
<p><input name="file[]" type="file" /></p>
<p><input name="file[]" type="file" /></p>
<p><input name="file[]" type="file" /></p>
<p><input name="file[]" type="file" /></p>
<input name="submit" type="submit" />
</form>
</body>
</html>

文件上传类代码

 代码如下

<?php
/*------------*/
class UploadFile
{
var $user_post_file  = array();
var $save_file_path  = '';
var $max_file_size   = '';
var $allow_type      = array('gif','jpg','png','zip','rar','txt','doc','pdf');
var $final_file_path = '';
var $save_info       = array();
var $error_info      = array();

/**
*构造函数,用于最早化新闻。
*
*@param Array $file
*@param String $path
*@param Integer $size
*@param Array $type
*/
function __construct($file,$path,$size = 2097152,$type='')
{
$this->user_post_file   = $file;
$this->save_file_path   = $path;
$this->max_file_size    = $size;
if(!$type=''){
$this->allow_type[] = $type;
}
}

/**
*
*
*@access public
*@return int
*/
function upload()
{
for($i=0;$i<count($this->user_post_file['name']);$i++)
{
if($this->user_post_file['error'][$i] == 0){//上传文件状态平常
//获取当前文件名,一时文件名,大小,类型,扩大名
$name     = $this->user_post_file['name'][$i];
$tmp_name = $this->user_post_file['tmp_name'][$i];
$size     = $this->user_post_file['size'][$i];
$type     = $this->user_post_file['type'][$i];
$ext_name = $this->getExtName($name);

//文件大小
if(!$this->checkSize($size)){
$this->error_info[] = '您上传的文本:'.$name.'太大';
continue;
}
//扩展名
if(!$this->checkType($ext_name)){
$this->error_info[] = '您上传的文书:'.$name.'不合规';
continue;
}
//违规上传
if(!is_uploaded_file($tmp_name)){
$this->error_info[] = '您上传的文本:'.$name.'属于违规提交';
continue;
}

//
$basename = $this->getBaseName($name,".".$ext_name);
$final_filename = $basename.'-'.time().'-'.rand(1,10000).'.'.$ext_name;
$this->final_file_path = $this->save_file_path.'/'.$final_filename;

if(!move_uploaded_file($tmp_name,$this->final_file_path)){
$this->error_info = $this->user_post_file['error'][$i];
continue;
}

//
$this->save_info[] = array(
"name" => $name,
"ext_name" => $ext_name,
          "type" => $type,
                            "size" => $size,
"final_filename" => $final_filename,
                            "path" => $this->final_file_path
);
}
}

return count($this->save_info);
}

/*
 *检查客户上传文件的尺寸时候合法
 *
 *@param Integer $size
 *@access private
 *@return boolean
 */
function checkSize($size)
{
if($size > $this->max_file_size){
return FALSE;
}

return TRUE;
}

/*
 *检查顾客上传文件的类型是或不是合法
 *
 *@access private
 *@return boolean
 */
function checkType($extension)
{
foreach($this->allow_type as $type){
if(strcasecmp($extension,$type) == 0){
return TRUE;
}
}

return FALSE;
}

/*
 *收获文件的扩大名
 *
 *@param string $filename
 *@access private
 *@return string
 */
function getExtName($filename)
{
$p = pathinfo($filename);

return $p['extension'];
}

/*
 *获得文件名(不蕴含扩大名)
 *
 *@param string $filename
 *@param string $type
 *@access private
 *@return boolean
 */
function getBaseName($filename,$ext_name)
{
$basename = basename($filename,$ext_name);

return $basename;
}

/*
 *
 *
 *
 */
function showErrorInfo()
{
if(count($this->error_info) != 0){
//echo 'error...<br/>';
foreach($this->error_info as $k=>$v){
echo ($k+1),':',$v,'<br/>';
}
}
}

function getSaveInfo()
{
return $this->save_info;
}
}

//$upload = new UploadFile('','');
//$upload = new UploadFile();
//$upload->showErrorInfo();

?>

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