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run code in 300+ PHP versions simultaneously
<?php class Filter { function __construct() {} // PHP 5: filter is a constructor // PHP 7: filter is a constructor and E_DEPRECATED is raised // PHP 8: filter is a normal method and is not a constructor; no E_DEPRECATED is raised function filter($a) {} } $filter = new ReflectionMethod('Filter', 'filter'); // PHP 5: bool(true) // PHP 7: bool(true) // PHP 8: bool(false) var_dump($filter->isConstructor());
Output for 5.2.14 - 5.2.17, 5.3.3 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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
bool(false)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.13, 5.3.0 - 5.3.2
Strict Standards: Redefining already defined constructor for class Filter in /in/I3QoX on line 9 bool(false)
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: reflectionmethod in /in/I3QoX on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: reflectionmethod in /in/I3QoX on line 12

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