randome-code-generator.php

<?php
/**
*
*Title: Randome code generator
*Description: randomCodeGenerte($str , $count) generate random code frome $str that is a string. the length of code is equal the value of $count
* $str: a string that can be contain of numbers and charachters. the code create from it's charachters.
* $count: it is a integer that it's defult value is 1. it determineس the length of code would be generate.
* 
**/
function randomCodeGenerate($str , $count = 1){

	$n = strlen($str);
	$out = '';
	for($k=0 ; $k < $count ; $k++){
		$i = rand(0 , $n - 1);
		$out .= substr($str, $i , 1);
	}
	return $out;
}