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<?php class Increment { function __invoke($x) { ++$x->num; } } $c = new Increment(); $a = new \stdClass(); $a->num = 5; call_user_func_array($c, [$a]); var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
object(stdClass)#2 (1) { ["num"]=> int(6) }

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