getParameters(); // Skip parameters already resolved if (! empty($resolvedParameters)) { $parameters = array_diff_key($parameters, $resolvedParameters); } foreach ($parameters as $index => $parameter) { \assert($parameter instanceof \ReflectionParameter); if ($parameter->isDefaultValueAvailable()) { try { $resolvedParameters[$index] = $parameter->getDefaultValue(); } catch (ReflectionException $e) { // Can't get default values from PHP internal classes and functions } } else { $parameterType = $parameter->getType(); if ($parameterType && $parameterType->allowsNull()) { $resolvedParameters[$index] = null; } } } return $resolvedParameters; } }