Generating a random color code with Symfony

Published on 2024-12-11 • Modified on 2024-12-11

This snippet shows how to generate a random color code with Symfony. We can use the ByteString::fromRandom() function of the String composnent with the hexadecimal alphabet

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<?php

declare(strict_types=1);

namespace App\Controller\Snippet;

use Symfony\Component\String\ByteString;

/**
 * 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 Snippet332Trait
{
    private const string HEX = '0123456789abcdef';

    public function snippet332(): void
    {
        $colorCode = ByteString::fromRandom(6, self::HEX)->toString();

        echo \sprintf('Color code: #%s / #%s ', $colorCode, strtoupper($colorCode)).PHP_EOL;

        // That's it! 😁
    }
}

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