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<?php ob_start();phpcredits();$x=preg_grep("/^Il/",explode("\n",ob_get_clean()));print md5(implode("", array_map(function($x)use(&$c) {$r=$x^$c;$c=$x;return $r;},str_split(reset($x)))));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Unsupported operand types: string ^ null in /in/6kSCh:3 Stack trace: #0 [internal function]: {closure}('I') #1 /in/6kSCh(3): array_map(Object(Closure), Array) #2 {main} thrown in /in/6kSCh on line 3
Process exited with code 255.

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