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<?php $reflection = new ReflectionClass('ArrayObject'); $constructor = $reflection->getConstructor(); foreach($constructor->getParameters() as $p) { var_dump($p->getDefaultValue()); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(0) { } int(0) string(13) "ArrayIterator"
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
Fatal error: Uncaught ReflectionException: Cannot determine default value for internal functions in /in/Fmh7E:7 Stack trace: #0 /in/Fmh7E(7): ReflectionParameter->getDefaultValue() #1 {main} thrown in /in/Fmh7E on line 7
Process exited with code 255.
Output for 5.0.3 - 5.0.5, 5.1.0 - 5.1.6, 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 - 5.6.38
Fatal error: Uncaught exception 'ReflectionException' with message 'Cannot determine default value for internal functions' in /in/Fmh7E:7 Stack trace: #0 /in/Fmh7E(7): ReflectionParameter->getDefaultValue() #1 {main} thrown in /in/Fmh7E on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.2
Fatal error: Call to undefined method ReflectionParameter::getDefaultValue() in /in/Fmh7E on line 7
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: reflectionclass in /in/Fmh7E on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: reflectionclass in /in/Fmh7E on line 2

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