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phpcompressiondeflate

Inflate data encoded with ZLIB_ENCODING_DEFLATE in php

Saying a compressed string:

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

How uncompress it?

$uncompressed = gzinflate($compressed);

Warning: gzinflate(): data error in php shell code on line 1
Solution

  • As a workaround you can use gzcompress() and gzuncompress() to get deflated zlib encoding.

    The compressed string is the same as using gzdeflate() and the inflating (uncompressing) works without any error.

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

    string(19) "xs-(J-.VM║\000╝?"

    $uncompressed = gzuncompress($compressed);
var_dump($uncompressed);

    string(11) "Compress me"