3v4l.org

run code in 500+ PHP versions simultaneously
<?php $quux = ['foo' => 'bar']; $obj = new stdClass; $obj->bar = 'baz'; $bar = $obj->{$quux['foo']}; var_dump($bar);
Output for 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.5.3
string(3) "baz"
preferences:
42.3 ms | 1555 KiB | 4 Q