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README.md

LZ4 Extension for PHP

Build Status

This extension allows LZ4.

Documentation for LZ4 can be found at » https://github.com/Cyan4973/lz4.

Build from sources

% git clone --recursive --depth=1 https://github.com/kjdev/php-ext-lz4.git
% cd php-ext-lz4
% phpize
% ./configure
% make
% make install

To use the system library

% ./configure --with-lz4-includedir=/usr

Distribution binary packages

Fedora / CentOS / RHEL

RPM packages of this extension are available in » Remi's RPM repository and are named php-lz4.

Configuration

lz4.ini:

extension=lz4.so

Function

  • lz4_compress — LZ4 compression
  • lz4_uncompress — LZ4 decompression

lz4_compress — LZ4 compression

Description

string lz4_compress ( string $data [ , int $level = 0 , string $extra = NULL ] )

LZ4 compression.

Pameters

  • data

    The string to compress.

  • level

    The level of compression (1-12, Recommended values are between 4 and 9). (Default to 0, Not High Compression Mode.)

  • extra

    Prefix to compressed data.

Return Values

Returns the compressed data or FALSE if an error occurred.

lz4_uncompress — LZ4 decompression

Description

string lz4_uncompress ( string $data [ , long $maxsize = -1 , long $offset = -1 ] )

LZ4 decompression.

Pameters

  • data

    The compressed string.

  • maxsize

    Allocate size output data.

  • offset

    Offset to decompressed data.

Return Values

Returns the decompressed data or FALSE if an error occurred.

Examples

$data = lz4_compress('test');

lz4_uncompress($data);

Compress Data

Default

$data = lz4_compress('test')

compress-default

Extra prefix data

$data = lz4_compress('test', false, 'PREFIX')

compress-extra

Uncompress Data

Default

lz4_uncompress($data);

uncompress-default

Offset

lz4_uncompress($data, 256, 6);

uncompress-offset

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