3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test { public function a() { $this->b(); } public function b() { $this->c(); } public function c() { $this->d(); } public function d() { $this->e(); } public function e() { var_dump(debug_backtrace(false, 2)); } } $test = new Test(); $test->a();

preferences:
31.99 ms | 402 KiB | 5 Q