3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo { class Bar { public function baz() { return strlen('Regarding the overhead: Just keep in mind, that a typical application calls built-in functions many thousand times. Even if the difference is small: It exists.'); } } $start = microtime(true); $foo = new Bar; for($x = 0; $x < 100000000; $x++) { $foo->baz(); } echo "Time: " . number_format((microtime(true) - $start) * 1000, 2, ""," ") . ' ms'; }

preferences:
33.15 ms | 402 KiB | 5 Q