Random Token Generator - PHP

randomToken.php

<?php

$generateToken = function($length = 50) {
    
    $token = "";
    $string = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    $maxNumbers = strlen($string);
    
    $i = 0;
    while ($i < $length) {
      $token .=  $string[ random_int(0, $maxNumbers - 1) ];
      $i++;
    }
    
    return $token;

};

echo $generateToken(60) . "\n";