gzdecode
gzcompress() is the same like gzdefflate(), it produces identical data and its speed is the same as well. The only difference is that gzcompress produces 6 bytes bigger result (2 extra bytes at the beginning and 4 extra bytes at the end).
gzdeflate
(PHP 4 >= 4.0.4, PHP 5)
gzdeflate — Compresse une chaîne
Description
string gzdeflate
( string $data
[, int $level
] )
gzdeflate() compresse la chaîne donnée en utilisant le format de données DEFLATE.
Pour plus de détails sur l'algorithme, lisez le document » "ZLIB Compressed Data Format Specification version 3.3" (RFC 1950).
Liste de paramètres
- data
-
Les données à compresser.
- level
-
Le degré de compression. 0 signifie aucune compression jusqu'à 9 pour une compression maximale. Si omis, le degré de compression par défaut sera celui de la bibliothèque zlib.
Valeurs de retour
La chaîne compressée ou FALSE si une erreur survient.
Exemples
Exemple #1 Exemple avec gzdeflate()
<?php
$compressed = gzdeflate('Compresse moi', 9);
echo $compressed;
?>
add a note
User Contributed Notesgzdeflate
tomas at slax dot org
03-Oct-2008 02:13
03-Oct-2008 02:13
romain dot lalaut at laposte dot net
08-Oct-2007 04:20
08-Oct-2007 04:20
@ giunta dot gaetano at sea-aeroportimilano dot it
No, gzdeflate() implements rfc1951.
And rf2616 (http 1.1 specs) says "deflate : The "zlib" format defined in RFC 1950 [31] in combination with the "deflate" compression mechanism described in RFC 1951 [29]."
giunta dot gaetano at sea-aeroportimilano dot it
21-Aug-2006 02:22
21-Aug-2006 02:22
Take care that that "PHP deflate" != "HTTP deflate".
The deflate encoding used in HTTP is actually zlib encoded.
This is what PHP functions return:
gzencode() == gzip
gzcompress() == zlib (aka. HTTP deflate)
gzdeflate() == *raw* deflate encoding
denis dot noessler at red-at dot de
17-Jun-2003 12:26
17-Jun-2003 12:26
if you have compressed data which is greater than 2 MB (system dependent), you will receive a buffer error by calling the function gzinflate().
be sure to to compress your data by a lower compression level, like 1.
i.e.: gzdeflate($sData, 1);