current_time( 'mysql' ) returns local site time: 2021-03-02 12:04:05
current_time( 'mysql', 1 ) returns GMT: 2021-03-02 17:04:05
current_time( 'timestamp' ) returns local site time: 2021-03-02 12:04:05current_time( 'timestamp', 1 ) returns GMT: 2021-03-02 17:04:05
