PHP Classes

LZW: Compress and uncompress data with LZW algorithm

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Last Updated Ratings Unique User Downloads Download Rankings  
2007-09-02 (8 years ago) RSS 2.0 feedNot enough user ratingsTotal: 1,573 All time: 2,393 This week: 1,152Up
Version License PHP version Categories  
lzwc 1.0.0BSD License4.0Algorithms, Compression
Description Author  

This class can be used to compress and uncompress data with the LZW algorithm in pure PHP code.

It can take a string of data and compress it with the LZW algorithm. It can also do the opposite, i.e. extract the original data from compressed string using the same algorithm.

Innovation Award  
PHP Programming Innovation award nominee
August 2007
Number 7

Prize: One license of PHPEdit Professional
LZW (Lempel-Ziv-Welch) is a compression algorithm made popular for its use in the formats GIF, TIFF and PDF.

This class can be used to compress and decompress data that uses LZW algorithm in pure PHP.

It makes possible to encode and decode image and documents that employ this algorithm using only pure PHP code, thus without any special PHP extensions.

Manuel Lemos
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Innovation award
Innovation award
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  Files folder image Files  
File Role Description
Accessible without login Plain text file lzwc.php Class The compression class
Plain text file example Example A simple example of the use of this class

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