php压缩和解压缩字符串的方法

本文实例讲述了php压缩和解压缩字符串的方法。分享给大家供大家参考。具体如下：

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

    $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";

希望本文所述对大家的php程序设计有所帮助。