3v4l.org

run code in 500+ PHP versions simultaneously
<?php class a { public function vw($xc) { return $xc; } } class b extends a { public function wv() { echo parent::vw("I'm a missing parameter") . 'from b via wv'; } } $d = new a; echo $d->vw('this is a').PHP_EOL; $c = new b; echo $c->vw('this is a from b via a').PHP_EOL; $c->wv();
Output for 5.5.0 - 5.5.35, 5.6.0 - 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.6
this is a this is a from b via a I'm a missing parameterfrom b via wv
preferences:
101.74 ms | 1740 KiB | 4 Q