Random string generator a-la imgur urls etc.

String_Generator.php

<?php 

function generate_string($length) { 
	
	$chars = "0123456789abcdefghijklmnopqrstuvwxyz"; 
	$string = ""; 
        
        for ($i = 0; $i < $length; $i++) { 
	  $string .= $chars[mt_rand(0, strlen($chars) - 1)]; 
	} 
	
	return $string;
}

?>