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--TEST-- ReflectionParameter Check for parameter being optional --FILE-- <?php class Test { function func($x, $y = NULL){ } } $f = new ReflectionMethod('Test', 'func'); var_dump($f->getNumberOfParameters()); var_dump($f->getNumberOfRequiredParameters()); $p = new ReflectionParameter(array('Test', 'func'), 'x'); var_dump($p->isOptional()); $p = new ReflectionParameter(array('Test', 'func'), 'y'); var_dump($p->isOptional()); try { $p = new ReflectionParameter(array('Test', 'func'), 'z'); var_dump($p->isOptional()); } catch (Exception $e) { var_dump($e->getMessage()); } ?> ===DONE=== --EXPECT-- int(2) int(1) bool(false) bool(true) string(54) "The parameter specified by its name could not be found" ===DONE===