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run code in 300+ PHP versions simultaneously
<?php class Foo { public function isFoo() { var_dump(isset($this)); return $this instanceof Foo; } } class Bar extends Foo { public function doSomething() { return Foo::isFoo(); } } $b = new Bar; var_dump($b->doSomething()); // bool(false)
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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(true) bool(true)
preferences:
272.19 ms | 404 KiB | 339 Q