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Innovation award
Nominee: 3x |
This package can be used to compress and uncompress data using the Burrows-Wheeler transform (BWT) and Move-To-Front (MTF) encoder.
These data processing algorithms are commonly used in compression schemes employed by the bzip2 program.
Each of these algorithms are implemented in separate classes and do not require any special PHP extensions.
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| Name: |
BWT & MTF encoder |
| Base name: |
bwt |
| Description: |
Compress and decompress data using BWT and MTF |
| Version: |
- |
| PHP version: |
4.1.0 |
| License: |
GNU General Public License (GPL) |
| All time users: |
839 users |
| All time rank: |
3616 |
| Week users: |
1 user |
| Week rank: |
2151  |
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December 2006
Number 6
Prize: One book of choice by SAMS |
bzip2 is a compression program that achieves great data compression ratios.
PHP provides an extension that can implement bzip2 compression. However, that extension is not always available in all PHP distributions.
This class implements BWT and MTF data transformation algorithms that area also used by the bzip2 program. The class may be used to implement bzip2 like compression when the bzip2 extension is not available.
Manuel Lemos |
| Ratings | Utility |
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Overall |
Rank |
| All time: |
Not sure (58.3%) |
Good (91.7%) |
- |
Good (91.7%) |
- |
- |
Not sure (47.5%) |
1695 |
| Month: |
Not yet rated by the users |
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