其实php对gzip解压很简单，用内置的gzdecode函数就可以了，不过很可惜我配置了半天也无法支持gzdecode函数，所以只好变通一下： 

 
if (!function_exists('gzdecode')) {      
    function gzdecode ($data) {      
        $flags = ord(substr($data, 3, 1));      
        $headerlen = 10;      
        $extralen = 0;      
        $filenamelen = 0;      
        if ($flags & 4) {      
            $extralen = unpack('v' ,substr($data, 10, 2));      
            $extralen = $extralen[1];      
            $headerlen += 2 + $extralen;      
        }      
        if ($flags & 8) // Filename      
            $headerlen = strpos($data, chr(0), $headerlen) + 1;      
        if ($flags & 16) // Comment      
            $headerlen = strpos($data, chr(0), $headerlen) + 1;      
        if ($flags & 2) // CRC at end of file      
            $headerlen += 2;      
        $unpacked = @gzinflate(substr($data, $headerlen));      
        if ($unpacked === FALSE)      
              $unpacked = $data;      
        return $unpacked;      
     }      
} 

调用方法很简单： 

 
$f=@file_get_contents("http://www.jb51.net");       
echo gzdecode($f);