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<?php declare(strict_types=1); function sum(array $ints): int { (function (int ...$ints) {})(...$ints); return array_sum($ints); } var_dump(sum([1, 2, 3])); var_dump(sum([1, 2, "three"]));
Output for git.master, git.master_jit, rfc.property-hooks
int(6) Fatal error: Uncaught TypeError: {closure}(): Argument #3 must be of type int, string given, called in /in/Em1Uq on line 5 and defined in /in/Em1Uq:5 Stack trace: #0 /in/Em1Uq(5): {closure}(1, 2, 'three') #1 /in/Em1Uq(11): sum(Array) #2 {main} thrown in /in/Em1Uq on line 5
Process exited with code 255.

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