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<?php $interval = new DateInterval('P2D'); var_dump(property_exists($interval, 'dx')); var_dump(isset($interval->dx)); var_dump($interval->dx);
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) bool(false) Warning: Undefined property: DateInterval::$dx in /in/Cvsg7 on line 5 NULL

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