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<?php $ref = new ReflectionFunction('gmmktime'); $params = $ref->getParameters(); var_dump($params[0]->isOptional(), $params[0]->isDefaultValueAvailability());
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined method ReflectionParameter::isDefaultValueAvailability() in /in/YFSmD:6 Stack trace: #0 {main} thrown in /in/YFSmD on line 6
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Call to undefined method ReflectionParameter::isDefaultValueAvailability() in /in/YFSmD on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Notice: Undefined offset: 0 in /in/YFSmD on line 6 Fatal error: Call to a member function isOptional() on a non-object in /in/YFSmD on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: reflectionfunction in /in/YFSmD on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: reflectionfunction in /in/YFSmD on line 3

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