current_time( 'mysql' ) returns local site time: 2020-09-25 08:34:35
current_time( 'mysql', 1 ) returns GMT: 2020-09-25 12:34:35
current_time( 'timestamp' ) returns local site time: 2020-09-25 08:34:35current_time( 'timestamp', 1 ) returns GMT: 2020-09-25 12:34:35
