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<?php $callable = array($x, $y); call_user_func($callable); $callable();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $x in /in/6AsHT on line 2 Warning: Undefined variable $y in /in/6AsHT on line 2 Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, first array member is not a valid class name or object in /in/6AsHT:3 Stack trace: #0 {main} thrown in /in/6AsHT on line 3
Process exited with code 255.

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