下面PHP代码通过gzcompress和gzuncompress压缩和解压缩字符串，可以设定压缩级别
/**
* PHP压缩和解压缩字符串的代码
*
* @param
* @arrange 512-笔记网： www.512Pic.com
**/
$str = 'Hello I am a very very very very long string';
$compressed = gzcompress($str,9);//压缩级别为9
$uncompressed = gzuncompress($compressed);
echo $str,"\n";
echo $uncompressed,"\n";
echo base64_encode($compressed),"\n";
echo bin2hex($compressed),"\n";
echo urlencode($compressed),"\n";
/*** 来自编程之家 jb51.cc（jb51.cc） ***/