This code snipped shows you how to generate random strings in PHP.

random_string.php

<?php

function random_string($length) {
	
	$LETTERS = 'abcdefghijklmnopqrstuvwxyz';
	$random_string = '';
	
	for ($i=0; $i < $length; $i++) {
		$random_string = $random_string.$LETTERS[rand(0, strlen($LETTERS)-1)];
	}
	return $random_string;
}

?>