current_time( 'mysql' ) returns local site time: 2019-12-07 11:26:09
current_time( 'mysql', 1 ) returns GMT: 2019-12-07 16:26:09
current_time( 'timestamp' ) returns local site time: 2019-12-07 11:26:09current_time( 'timestamp', 1 ) returns GMT: 2019-12-07 16:26:09
