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<?php $obj1 = new ArrayObject(array(array(1,2,3]), 1])); var_dump($obj1); unset($obj1[0][0]); var_dump($obj1);
Output for 5.3.0 - 5.3.22, 5.4.0 - 5.4.12
Parse error: syntax error, unexpected ']', expecting ')' in DgcR7 on line 2
Process exited with code 255.

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