gzdeflate
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gzdeflate — Deflate a string
Description
gzdeflate(string
$data, int $level = -1, int $encoding = ZLIB_ENCODING_RAW): string|false
This function compresses the given string using the DEFLATE
data format.
For details on the DEFLATE compression algorithm see the document "» DEFLATE Compressed Data Format Specification version 1.3" (RFC 1951).
Parameters
-
data -
The data to deflate.
-
level -
The level of compression. Can be given as 0 for no compression up to 9 for maximum compression. If not given, the default compression level will be the default compression level of the zlib library.
-
encoding -
One of
ZLIB_ENCODING_*constants.
Return Values
The deflated string or false if an error occurred.
Examples
Example #1 gzdeflate() example
<?php
$compressed = gzdeflate('Compress me', 9);
echo $compressed;
?>
See Also
- gzinflate() - Inflate a deflated string
- gzcompress() - Compress a string
- gzuncompress() - Uncompress a compressed string
- gzencode() - Create a gzip compressed string
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