第一种方案：在.htaccess 中添加

AddHandler application/x-httpd-php .css .html .js

#这是添加你要压缩的类型

php_value auto_prepend_file "/home/a4284418/public_html/gzip.php"

#这是你给这些类型增加一个自动运行的php代码，后面一定要填你空间的绝对地址

gzip.php

<?php
ob_start("ob_gzhandler");
ob_start("compress");
//如果出现css不能解释，只显示网页，请加入下面的红色代码，去掉注释符
/*

$pathinfo = pathinfo($_SERVER[PHP_SELF]);
switch ($pathinfo['extension']) {
case "css" : header("Content-type: text/css");
break;
case "html" : header("Content-type: text/html");
break;
case "js" : header("Content-type: text/javascript");
break;
default : break;
}
*/
?>

第二种方案 ：此种方案是gzip的升级版，可以将gzip的压缩文件缓存下来，避免重复压缩,在.htaccess 中添加

htaccess RewriteRule (.*.css$|.*.js$) gzip.php?$1 [L]

<?php
// htaccess RewriteRule (.*.css$|.*.js$) gzip.php?$1 [L]
//项目根路径
define('ABSPATH', dirname(__FILE__).'/');
//Gzip压缩开关
$cache = true;
//存放gz文件的目录，确保可写
$cachedir = 'gzip-cache/';
if (!is_dir(ABSPATH.$cachedir))
{
mkdir(ABSPATH.$cachedir);
}
//判断是否支持gzip
$gzip = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
$deflate = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate');
//看浏览器是否支持gzip 否则就是 deflate，再就是 none
$encoding = $gzip ? 'gzip' : ($deflate ? 'deflate' : 'none');
if(!isset($_SERVER['QUERY_STRING'])) exit();
//$key=array_shift(explode('?', $_SERVER['QUERY_STRING']));
//$key=str_replace('../','',$key);
$key =basename($_SERVER['QUERY_STRING']);
//文件的绝对路径
$filename=ABSPATH.$_SERVER['QUERY_STRING'];
$symbol='^';
$rel_path=str_replace(ABSPATH,'',dirname($filename));
$namespace=str_replace('/',$symbol,$rel_path);
$cache_filename=ABSPATH.$cachedir.$namespace.$symbol.basename($filename).'.gz';//生成gz文件路径
$type="Content-type: text/html"; //默认的类型信息
$pathInfo = pathinfo($filename);
//根据后缀判断文件类型信息
$ext = $pathInfo['extension'];
switch ($ext){
case 'css':
$type="Content-type: text/css";
break;
case 'js':
$type="Content-type: text/javascript";
break;
default:
exit();
}
if($cache)
{
if(file_exists($cache_filename))
{
//假如存在gz文件
$mtime = filemtime($cache_filename);
$gmt_mtime = gmdate('D, d M Y H:i:s', $mtime) . ' GMT';
//读取gz文件输出
$content = file_get_contents($cache_filename);
header("Last-Modified:" . $gmt_mtime);
header("Expires: ");
header("Cache-Control: ");
header("Pragma: ");
header($type);
header("Tips: Normal Respond (Gzip)");
header("Content-Encoding: gzip");
echo $content;
}else if(file_exists($filename))
{
//没有对应的gz文件
$mtime = mktime();
$gmt_mtime = gmdate('D, d M Y H:i:s', $mtime) . ' GMT';
$content = file_get_contents($filename);//读取文件
$content = gzencode($content, 9, $gzip ? FORCE_GZIP : FORCE_DEFLATE);//压缩文件内容
header("Last-Modified:" . $gmt_mtime);
header("Expires: ");
header("Cache-Control: ");
header("Pragma: ");
header($type);
header("Tips: Build Gzip File (Gzip)");
header ("Content-Encoding: " . $encoding);
header ('Content-Length: ' . strlen($content));
if ($fp = fopen($cache_filename, 'w'))
{
//写入gz文件，供下次使用
fwrite($fp, $content);
fclose($fp);
}
echo $content;

}else{
header("HTTP/1.0 404 Not Found");
}
}else
{ //处理不使用Gzip模式下的输出。原理基本同上
if(file_exists($filename))
{
$mtime = filemtime($filename);
$gmt_mtime = gmdate('D, d M Y H:i:s', $mtime) . ' GMT';
header("Last-Modified:" . $gmt_mtime);
header("Expires: ");
header("Cache-Control: ");
header("Pragma: ");
header($type);
header("Tips: Normal Respond");
$content = readfile($filename);
echo $content;
}else
{
header("HTTP/1.0 404 Not Found");
}
}

?>

第三种方案 ：直接修改服务器环境

1，httpd.conf修改
LoadModule headers_module modules/mod_headers.so 开启
LoadModule deflate_module modules/mod_deflate.so 添加

2,Apache2.2\conf\extra\httpd-vhosts.conf 的默认虚拟主机里加

<Location "/">
SetOutputFilter DEFLATE
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
Header append Vary User-Agent env=!dont-vary
</Location>

例子：

<VirtualHost 127.0.0.3>
DocumentRoot 'D:/xampp/htdocs/wmt'
ServerName 127.0.0.3
DirectoryIndex index.php index.html
<Directory "D:\xampp\htdocs\wmt">
Options Indexes FollowSymLinks Includes ExecCGI
AllowOverride All
Order Allow,Deny
Allow from all
</Directory>
<Location "/">
SetOutputFilter DEFLATE
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
Header append Vary User-Agent env=!dont-vary
</Location>
</VirtualHost>