3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f($req, $opt = null, ...$params) { printf('$req: %d; $opt: %d; number of params: %d'."\n", $req, $opt, count($params)); $rr = '121245121245612121646212'; for ($i = 0; $i<2000; $i++) { $f = str_replace('12','', $rr); if($i%20 ===0 ) { echo $f; } } } f(1); f(1, 2); f(1, 2, 3); f(1, 2, 3, 4); f(1, 2, 3, 4, 5,6,7,8,9,10); ?>

preferences:
42.33 ms | 402 KiB | 5 Q