3v4l.org

run code in 500+ PHP versions simultaneously
<?php namespace a\b\c\d; trait foo { public function x() { echo __NAMESPACE__; } } class bar { use foo; } echo (new bar())->x();
Output for 5.6.38, 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
a\b\c\d

preferences:
112.54 ms | 1456 KiB | 4 Q