Generate Password 12 characters long with some characters removed (l,1,0,o) for readability

generateRandomString.php

<?php

function generateRandomString($length = 12) {
    $characters = '23456789abcdefghijkmnpqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ !@#$%^&*()_-';
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, strlen($characters) - 1)];
    }
    return $randomString;
}