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<?php function foo(int $foo, int $bar) { echo $foo + $bar; } var_dump(foo(1, 1)); // affiche 2 var_dump(foo(1, '1')); // affiche 2 (conversion car mode coercitif) var_dump(foo('a', 1));
Output for git.master, git.master_jit, rfc.property-hooks
2NULL 2NULL Fatal error: Uncaught TypeError: foo(): Argument #1 ($foo) must be of type int, string given, called in /in/T66P1 on line 10 and defined in /in/T66P1:3 Stack trace: #0 /in/T66P1(10): foo('a', 1) #1 {main} thrown in /in/T66P1 on line 3
Process exited with code 255.

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