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<?php $t = new stdClass(); $->b = new stdClass(); var_dump(isset($t->b->c);
Output for 5.4.0 - 5.4.30
Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR), expecting variable (T_VARIABLE) or '$' in /in/11cbF on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_OBJECT_OPERATOR, expecting T_VARIABLE or '$' in /in/11cbF on line 4
Process exited with code 255.

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