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<?php $starttime = ['year' => 2019, 'month' => 5, 'day' => 10, 'hour' => 20, 'minute' => 15]; $timestamp = mktime( $starttime['hour'], $starttime['minute'], 0, $starttime['month'], $starttime['day'], $starttime['year'] ); var_dump($timestamp); var_dump(date('Y-m-d H:i:s', $timestamp));

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