vendor/symfony/validator/Constraints/Callback.php line 23
<?php/** This file is part of the Symfony package.** (c) Fabien Potencier <fabien@symfony.com>** For the full copyright and license information, please view the LICENSE* file that was distributed with this source code.*/namespace Symfony\Component\Validator\Constraints;use Symfony\Component\Validator\Constraint;/*** @Annotation* @Target({"CLASS", "PROPERTY", "METHOD", "ANNOTATION"})** @author Bernhard Schussek <bschussek@gmail.com>*/#[\Attribute(\Attribute::TARGET_CLASS | \Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]class Callback extends Constraint{/*** @var string|callable*/public $callback;public function __construct(array|string|callable $callback = null, array $groups = null, mixed $payload = null, array $options = []){// Invocation through annotations with an array parameter onlyif (\is_array($callback) && 1 === \count($callback) && isset($callback['value'])) {$callback = $callback['value'];}if (!\is_array($callback) || (!isset($callback['callback']) && !isset($callback['groups']) && !isset($callback['payload']))) {$options['callback'] = $callback;} else {$options = array_merge($callback, $options);}parent::__construct($options, $groups, $payload);}public function getDefaultOption(): ?string{return 'callback';}public function getTargets(): string|array{return [self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT];}}