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 < 1000000; $x++) { $foo->baz(); } echo "Time: " . (microtime(true) - $start ) . 'us'; }

preferences:
35.66 ms | 402 KiB | 5 Q