Generate random number in Laravel
If you want to generate the random string like you said, replace:
$string = str_random(15);with
// Available alpha caracters$characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';// generate a pin based on 2 * 7 digits + a random character$pin = mt_rand(1000000, 9999999) . mt_rand(1000000, 9999999) . $characters[rand(0, strlen($characters) - 1)];// shuffle the result$string = str_shuffle($pin);Edit:
Before, the code wasn't generating a random alpha character all the time. Thats because Laravel's str_random generates a random alpha-numeric string, and sometimes that function returned a numeric value (see docs).