3v4l.org

run code in 300+ PHP versions simultaneously
<?php $r = new ReflectionFunction('copy'); foreach($r->getParameters() as $p) { var_dump($p->isOptional()); }
Output for 5.3.4 - 5.3.29, 5.4.25 - 5.4.45, 5.5.9 - 5.5.38, 5.6.0 - 5.6.40, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false) bool(false) bool(true)
Output for 5.4.0 - 5.4.24, 5.5.0 - 5.5.8
bool(false) bool(false) bool(false)
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.3
bool(false) bool(false)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: reflectionfunction in /in/81J6e on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: reflectionfunction in /in/81J6e on line 2
preferences:
243.96 ms | 401 KiB | 456 Q