(PHP 5 >= 5.4.0)
zlib_encode — Compress data with the specified encoding
$data
, string $encoding
[, string $level = -1
] )Compress data with the specified encoding.
本函数还未编写文档，仅有参数列表。
data
encoding
level
soywiz at gmail dot com (2012-09-20 20:12:39)
RFC 1950 - zlib
RFC 1951 - raw deflate
RFC 1952 - gzip
The $encoding parameter referers to the window bits. So you can encode in several formats:
<?php
// RFC 1950 - zlib
$compressedData = zlib_encode($uncompressedData, 15);
// RFC 1951 - raw deflate
$compressedData = zlib_encode($uncompressedData, -15);
// RFC 1952 - gzip
$compressedData = zlib_encode($uncompressedData, 31);
?>