3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function __construct() { $bar = new Bar(); $bar->test(); } } class Bar { public function test() { list(, $caller) = debug_backtrace(false); echo $caller['class']; } } $foo = new Foo();

preferences:
39.44 ms | 402 KiB | 5 Q