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<?php class a { public function b($x = [1,2,3,4]) { echo __METHOD__, PHP_EOL; echo __FUNCTION__, PHP_EOL; if (is_array($x)) { array_walk($x, __FUNCTION__); } else { echo $x; } } } $b = new a(); $b->b();
Output for git.master, git.master_jit, rfc.property-hooks
a::b b Fatal error: Uncaught TypeError: array_walk(): Argument #2 ($callback) must be a valid callback, function "b" not found or invalid function name in /in/tI56T:10 Stack trace: #0 /in/tI56T(10): array_walk(Array, 'b') #1 /in/tI56T(19): a->b() #2 {main} thrown in /in/tI56T on line 10
Process exited with code 255.

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