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<?php $SESSION = []; function a($name) { global $SESSION; $SESSION[$name] = $$name; } $a = 'abc'; a('a'); var_dump($SESSION);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $a in /in/9DdjK on line 8 array(1) { ["a"]=> NULL }

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