现在很多网页都是GZIP压缩的,如果用PHP取过来发现是一堆乱码,可以用GZIP函数类解压,但有时候PHP编译没编译GZIP
可用下面函数代替: 
      
$flags =  (  ( $data, 3, 1 ) );	$headerlen = 10;	$extralen = 0;	$filenamelen = 0;	 ($flags & 4) {		$extralen =  ( 'v',  ( $data, 10, 2 ) );		$extralen = $extralen [1];		$headerlen += 2 + $extralen;	}	 ($flags & 8) // Filename 		$headerlen =  ( $data,  ( 0 ), $headerlen ) + 1;	 ($flags & 16) // Comment 		$headerlen =  ( $data,  ( 0 ), $headerlen ) + 1;	 ($flags & 2) // CRC at end of file 		$headerlen += 2;	$unpacked = @ (  ( $data, $headerlen ) );	 ($unpacked === FALSE)		$unpacked = $data;	 $unpacked;
}}
转自：