Generating a big random integer with PHP
Published on 2023-07-02 • Modified on 2023-07-02
This snippet shows how to generate a big random integer with PHP. It uses an undocumented PHP 8.2 function! Well, there is a documentation entry for the function, but it doesn't explain how it behaves and which problem it is supposed to address! What I understand, is that it generates a random integer of 19 digits digits as PHP_INT_MAX. So, the number is between 1000000000000000000 and PHP_INT_MAX. Use at your own risk! 😈
<?php
declare(strict_types=1);
namespace App\Controller\Snippet;
/**
* I am using a PHP trait to isolate each snippet in a file.
* This code should be called from a Symfony controller extending AbstractController (as of Symfony 4.2)
* or Symfony\Bundle\FrameworkBundle\Controller\Controller (Symfony <= 4.1).
* Services are injected in the main controller constructor.
*/
trait Snippet264Trait
{
public function snippet264(): void
{
$randomizer = new \Random\Randomizer(new \Random\Engine\Secure());
$nextInt = $randomizer->nextInt();
echo 'random int: '.$nextInt.PHP_EOL;
echo 'digits: '.\strlen((string) $nextInt).PHP_EOL.PHP_EOL;
echo 'PHP_INT_MAX: '.PHP_INT_MAX.PHP_EOL;
echo 'digits: '.\strlen((string) PHP_INT_MAX);
// That's it! 😁
}
}Run this snippet More on Stackoverflow Read the doc More on the web Random snippet
