PHP: gzencode - Manual
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gzencode — Create a gzip compressed string
Parameters
data-
The data to encode.
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-
The encoding mode. Can be
FORCE_GZIP(the default) orFORCE_DEFLATE.FORCE_DEFLATEgenerates RFC 1950 compliant output, consisting of a zlib header, the deflated data, and an Adler checksum.
Return Values
The encoded string, or false if an error occurred.
Examples
The resulting data contains the appropriate headers and data structure to make a standard .gz file, e.g.:
Example #1 Creating a gzip file
<?php
$data = file_get_contents("bigfile.txt");
$gzdata = gzencode($data, 9);
file_put_contents("bigfile.txt.gz", $gzdata);
?>See Also
- gzdecode() - Decodes a gzip compressed string
- gzdeflate() - Deflate a string
- gzinflate() - Inflate a deflated string
- gzuncompress() - Uncompress a compressed string
- gzcompress() - Compress a string
- » ZLIB Compressed Data Format Specification (RFC 1950)