PHP code example of mordilion / huffman-php

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

mordilion / huffman-php example snippets

use Mordilion\HuffmanPHP\Dictionary;
use Mordilion\HuffmanPHP\Huffman;

// Build a dictionary from sample text
$text = 'This is a Text to compress with the Huffman-Algorithm'; // 53 chars

$dictionary = new Dictionary([$text]);
$huffman = new Huffman($dictionary);

// Encode to binary
$binary = $huffman->encode($text);
// => '10000010101000011011010000110110010101110000101100010111001111010100110001001010100100001100100101100110011011000010010011001010111100101101101100000100000000011000111001001011111111110111011110010001101000100010011001011001' (289 chars)

// Encode with compression (URL-safe Base65, default)
$compressed = $huffman->encode($text, true);
// => '3QGgsnulxJqC2QweIz-V6SWj~pYoqYfA005HCR' (38 chars from 53)

// Decode
$decoded = $huffman->decode($binary);           // original text
$decoded = $huffman->decode($compressed, true);  // original text

$huffman = new Huffman($dictionary, Huffman::ALPHABET_BASE26_LOWER);

$compressed = $huffman->encode($text, true);
// => 'mtxhycztntclyrustzsjioonyevmiijcdwrxqflkwsymxtsb' (48 chars)

$decoded = $huffman->decode($compressed, true); // original text

$text = 'A Text with multiple Text Segments, to demonstrate the compression with multiple Text Segments'; // 94 chars

// Split into words and add space as a separate token
$tokens = array_merge(array_unique(explode(' ', $text)), [' ']);

$dictionary = new Dictionary($tokens, Dictionary::MAX_LENGTH_WHOLE_WORDS);
$huffman = new Huffman($dictionary);

$compressed = $huffman->encode($text, true);
// => '27thCP8gJKOciDUU' (16 chars from 94)

$decoded = $huffman->decode($compressed, true); // original text

bash
composer