3v4l.org

run code in 300+ PHP versions simultaneously
<?php global $throw; $throw = false; function foo() { bar(); } function bar() { baz(); } function baz() { boom(); } function boom() { global $throw; if ($throw) { throw new RuntimeException(); } } function test($n) { for ($i = 0; $i < $n; $i++) { try { foo(); } catch (RuntimeException $e) { echo $e->getLine(); } } } $t = microtime(); test(100000); echo (microtime() - $t) . ' us';

preferences:
32.22 ms | 402 KiB | 5 Q