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<?php declare(strict_types=1); function double(int $value) { return 2 * $value; } function coerceInt(string $value) : int { return (int)$value; } $a = double(coerceInt("5")); var_dump($a); $a = double("5"); var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
int(10) Fatal error: Uncaught TypeError: double(): Argument #1 ($value) must be of type int, string given, called in /in/VhnpM on line 15 and defined in /in/VhnpM:4 Stack trace: #0 /in/VhnpM(15): double('5') #1 {main} thrown in /in/VhnpM on line 4
Process exited with code 255.

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