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
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$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";
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希望本文所述对大家的php程序设计有所帮助。