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<?php declare(strict_types=1); function add(int $x, int $y): int { return $x + $y; } var_dump(add(1, 2)); var_dump(add(1, '2'));
Output for git.master, git.master_jit, rfc.property-hooks
int(3) Fatal error: Uncaught TypeError: add(): Argument #2 ($y) must be of type int, string given, called in /in/H0TBk on line 7 and defined in /in/H0TBk:3 Stack trace: #0 /in/H0TBk(7): add(1, '2') #1 {main} thrown in /in/H0TBk on line 3
Process exited with code 255.

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