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<?php $a = array(); $arrayKey = '[0][1]'; $a[0][1] = "two levels deep"; $vars = function($str) use ($vars) { return eval('return $vars'.$str.';'); }; echo $vars($arrayKey);
Output for git.master, git.master_jit
Warning: Undefined variable $vars in /in/c6Lrs on line 8 Warning: Trying to access array offset on value of type null in /in/c6Lrs(10) : eval()'d code on line 1 Warning: Trying to access array offset on value of type null in /in/c6Lrs(10) : eval()'d code on line 1
Output for rfc.property-hooks
Warning: Undefined variable $vars in /in/c6Lrs on line 8 Warning: Trying to access array offset on null in /in/c6Lrs(10) : eval()'d code on line 1 Warning: Trying to access array offset on null in /in/c6Lrs(10) : eval()'d code on line 1

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