benchmark.php

<?php

require_once __DIR__.'/vendor/autoload.php';

use Symfony\Component\Validator\Validation;
use Symfony\Component\Validator\Constraints\Length;
use Symfony\Component\Validator\Constraints\NotNull;
use Symfony\Component\Validator\Constraints\Range;

$validator = Validation::createValidatorBuilder()
    ->setApiVersion(Validation::API_VERSION_2_4)
//    ->setApiVersion(Validation::API_VERSION_2_5)
//    ->setApiVersion(Validation::API_VERSION_2_4 | Validation::API_VERSION_2_5)
    ->enableAnnotationMapping()
    ->getValidator();

class BenchClass
{
    /**
     * @NotNull
     * @Range(min=2, max=50)
     */
    public $foo;

    /**
     * @NotNull
     * @Length(min=3)
     */
    public $bar;
}

$object = new BenchClass();
$object->foo = 60;
$object->bar = 'fo';

$constraint = new Range(array('min' => 50));

// Validate once to autoload all needed classes
$validator->validate($object);

$time = microtime(true);

for ($i = 0; $i < 20; ++$i) {
    $validator->validate($object);
}

echo 1000*(microtime(true)-$time)."ms\n";