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<?php $test = new ArrayObject(); $test['test'] = 'test'; echo array_key_exists('test', $test);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, ArrayObject given in /in/eYanj:6 Stack trace: #0 {main} thrown in /in/eYanj on line 6
Process exited with code 255.

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