用PHP在服务端合并多个JS和CSS文件减少HTTP请求，提高速度

HTML代码如下:

PHP 代码如下:

//输出JS
header ("Content-type:Application/x-Javascript; Charset: utf-8");
if(isset($_GET)) {
$files = explode(",", $_GET[&＃39;get&＃39;]);
$str = &＃39;&＃39;;
foreach ($files as $key => $val){
$str .= file_get_contents($_GET[&＃39;path&＃39;].$val);
}
$str = str_replace("\t", "", $str); //清除空格
$str = str_replace("\r\n", "", $str); 
$str = str_replace("\n", "", $str); 
// 删除单行注释
$str = preg_replace("/\/\/\s*[a-zA-Z0-9_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/", "", $str); 
// 删除多行注释
$str = preg_replace("/\/\*[^\/]*\*\//s", "", $str);
echo $str;
}
//输出CSS
header ("content-type:text/css; charset: utf-8");
if(isset($_GET)) {
$files = explode(",", $_GET[&＃39;get&＃39;]);
$fc = &＃39;&＃39;;
foreach ($files as $key => $val){
$fc .= file_get_contents($_GET[&＃39;path&＃39;].$val.".css");
} 
$fc = str_replace("\t", "", $fc); //清除空格
$fc = str_replace("\r\n", "", $fc); 
$fc = str_replace("\n", "", $fc); 
$fc = preg_replace("/\/\*[^\/]*\*\//s", "", $fc); 
echo $fc; 
}

只是个简单原型,没有封装,另外,合并后的文件记得配合缓存.

附上一个相关的开源项目:http://code.google.com/p/minify/

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