Online PHP editor | vld for SpN0A

<?php $length = 8; $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890'; { $chars_length = (strlen($chars) - 1); $string = $chars{rand(0, $chars_length)}; for ($i = 1; $i < $length; $i = strlen($string)) { $r = $chars{rand(0, $chars_length)}; if ($r != $string{$i - 1}) { $string .= $r; } } return $string; }