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<?php $str = "null"; $arr = get_defined_vars(); foreach($arr as $a) { echo in_array('str',$a); }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, int given in /in/sFNVG:5 Stack trace: #0 /in/sFNVG(5): in_array('str', 1) #1 {main} thrown in /in/sFNVG on line 5
Process exited with code 255.

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