current_time( 'mysql' ) returns local site time: 2022-06-30 14:22:22
current_time( 'mysql', 1 ) returns GMT: 2022-06-30 12:22:22
current_time( 'timestamp' ) returns local site time: 2022-06-30 14:22:22current_time( 'timestamp', 1 ) returns GMT: 2022-06-30 12:22:22