PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
gzencode - Create a gzip compressed string
Code Examples

gzencode( string$data, [int$level = -1], [int$encoding = ZLIB_ENCODING_GZIP] ): string|false

This function returns a compressed version of the input data compatible with the output of the gzip program.

For more information on the GZIP file format, see the document: GZIP file format specification version 4.3 (RFC 1952).



The data to encode.


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.


The encoding mode. Can be FORCE_GZIP (the default) or FORCE_DEFLATE.

FORCE_DEFLATE generates 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.

Related Functions

Example of gzencode

Show all examples for gzencode

PHP Version:

Function gzencode:

Zlib Compression Functions

Most used PHP functions