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ASCII85: Encode and decode data using the ASCII85 algorithm

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Picture of Sam Shull
Name: Sam Shull <contact>
Classes: 9 packages by
Country: United States United States
Age: 38
All time rank: 37242 in United States United States
Week rank: 195 Up17 in United States United States Up
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This class can be used to encode and decode data using the ASCII85 algorithm.

It can take a string of data and encode it with the ASCII85 algorithm. It can also do the opposite, i.e. extract the original data from an encoded string using the same algorithm.

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Name: ASCII85
Base name: ascii85
Description: Encode and decode data using the ASCII85 algorithm
Version: 1.0.0
PHP version: 4.0
License: BSD License
All time users: 978 users
All time rank: 3403
Week users: 2 users
Week rank: 845 Up
 
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Group folder image Algorithms Numerical and statistical algorithms View top rated classes
Group folder image Text processing Manipulating and validating text data View top rated classes


  Innovation Award  
PHP Programming Innovation award nominee
August 2007
Number 10
ASCII 85 is an algorithm that can encode binary data using only ASCII characters.

Data encoded with ASCII 85 uses a wider range of characters than similar algorithms like base 64. Therefore it provides in a more efficient encoding of binary data. That is why it is used to encode binary data inside data formats like PDF.

This class provides a pure PHP implementation of ASCII 85, thus making it possible to encode and decode PDF files that use this algorithm, without needing special PHP extensions.

Manuel Lemos

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Wikipedia Description of ASCII85
Description of ASCII85

  Files folder image Files  
File Role Description
Accessible without login Plain text file ascii85.php Class the base class
Plain text file example Example An example of ASCII85 encoding

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