Random String

gistfile1.php

public function generateString ($length = 8) {
	string = "";
	$possible = "012346789abcdfghjkmnpqrtvwxyzABCDFGHJKLMNPQRTVWXYZ";
	$maxlength = strlen($possible);

	if ($length > $maxlength) {
		$length = $maxlength;
	}

	$i = 0;
	while ($i < $length) {
		$char = substr($possible, mt_rand(0, $maxlength-1), 1);
		if (!strstr($string, $char)) {
			$string .= $char;
			$i++;
		}
	}
	return $string;	
}