function generate_random_password($length = 4) { $alphabets = range('A','Z'); $numbers = range('0','9'); $additional_characters = array('_','.'); $final_array = array_merge($alphabets,$ numbers,$additional_ characters); $password = ''; while($length--) { $key = array_rand($final_array); $password .= $final_array[$key]; } return $password; }
$pass1 = generate_random_password(4);