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<?php class CallableByName { private $closure; public function __construct(\Closure $closure) { $this->closure = $closure; } public function invoke(array $parameters) { return call_user_func($this->closure, $this->getOrderedFromNamed($parameters)); } public function getOrderedFromNamed(array $parameters) { $orderedParameters = []; $functionReflection = new \ReflectionFunction($this->getClosure()); foreach ($functionReflection->getParameters() as $parameterReflection) { /* @var $parameterReflection \ReflectionParameter */ $parameterName = $parameterReflection->getName(); if (isset($parameters[$parameterName])) { $orderedParameters[$parameterName] = $parameters[$parameterName]; continue; } if ($parameterReflection->isDefaultValueAvailable()) { $orderedParameters[$parameterName] = $parameterReflection->getDefaultValue(); continue; } $orderedParameters[$parameterName] = null; } return $orderedParameters; }