Home  >  Article  >  php教程  >  php对gzip文件或者字符串解压实例参考

php对gzip文件或者字符串解压实例参考

WBOY
WBOYOriginal
2016-06-13 12:27:19780browse

      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: 

复制代码 代码如下:


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: 

复制代码 代码如下:


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

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn