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<?php function f($req, $opt = null, ...$params) { printf('$req: %d; $opt: %d; number of params: %d'."\n", $req, $opt, count($params)); } f(1); f(1, 2); f(1, 2, 3); f(1, 2, 3, 4); f(1, 2, 3, 4, 5); f(1, ff, 3, 4, 5,6,7,8,9,10,11,12,13); ?>
Output for git.master, git.master_jit, rfc.property-hooks
$req: 1; $opt: 0; number of params: 0 $req: 1; $opt: 2; number of params: 0 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 2 $req: 1; $opt: 2; number of params: 3 Fatal error: Uncaught Error: Undefined constant "ff" in /in/Pb60o:12 Stack trace: #0 {main} thrown in /in/Pb60o on line 12
Process exited with code 255.

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