php如何压缩字符串

在php中对字符串进行压缩的方法

1.使用gzip压缩算法进行压缩

$data = implode("", file("bigfile.txt"));
$gzdata = gzencode($data, 9);
$fp = fopen("bigfile.txt.gz", "w");
fwrite($fp, $gzdata);
fclose($fp);

2.使用bzcompress()函数进行压缩

$str = "sample data";
$bzstr = bzcompress($str, 9);
echo $bzstr;

3.使用gzdeflate()函数进行压缩

$compressed = gzdeflate('Compress me', 9);
echo $compressed;

4.使用gzcompress()函数进行压缩

$compressed = gzcompress('Compress me', 9);
echo $compressed;