3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function f($req, $opt = null, $params = null) { printf('$req: %d; $opt: %d; number of params: %d'."\n", $req, $opt, count($params)); var_dump($params); } f(1); f(1, 2); f(1, 2, 3); f(1, 2, 3, 4); f(1, 2, 3, 4, 5); ?>
Output for 7.2.0 - 7.3.0rc4
Warning: count(): Parameter must be an array or an object that implements Countable in /in/R8980 on line 4 $req: 1; $opt: 0; number of params: 0 NULL Warning: count(): Parameter must be an array or an object that implements Countable in /in/R8980 on line 4 $req: 1; $opt: 2; number of params: 0 NULL Warning: count(): Parameter must be an array or an object that implements Countable in /in/R8980 on line 4 $req: 1; $opt: 2; number of params: 1 int(3) Warning: count(): Parameter must be an array or an object that implements Countable in /in/R8980 on line 4 $req: 1; $opt: 2; number of params: 1 int(3) Warning: count(): Parameter must be an array or an object that implements Countable in /in/R8980 on line 4 $req: 1; $opt: 2; number of params: 1 int(3)
Output for 4.3.0 - 7.1.20
$req: 1; $opt: 0; number of params: 0 NULL $req: 1; $opt: 2; number of params: 0 NULL $req: 1; $opt: 2; number of params: 1 int(3) $req: 1; $opt: 2; number of params: 1 int(3) $req: 1; $opt: 2; number of params: 1 int(3)