PHP Classes

LZW: Compress and uncompress data with LZW algorithm

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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
Picture of Sam S
Name: Sam S <contact>
Classes: 9 packages by
Country: United States United States
Innovation award
Innovation award
Nominee: 8x

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

Downloadlzwc-2007-09-02.zip 3KB
Downloadlzwc-2007-09-02.tar.gz 3KB
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This week:204Up
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  Related pages  
LZW Unisys Patent Information
The LZW Patent is expired, here is proof from Unisys themselves.
Wikipedia Description of LZW
Wikipedia Description of LZW

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