Export Caesar Hash

Hash.php

<?php
//Export Caesar Hash 
$hash = array_flip(array('0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'));
$hash_length = count($hash);
$arr = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z');

foreach ($hash as $key => $value) {
  
	$arr_index  = rand(0, count($arr)-1);
	$hash[$key] = $arr[$arr_index];
	unset($arr[$arr_index]);
	sort($arr);
//	print_r("hash key: ".$key." ,arr length: ".count($arr)." ,arr index: ".$arr_index." ,arr value : ". $arr[$arr_index]);
//	print_r($arr);
}

print_r($hash);
?>