wp args order by multiple columns
"post_type" => "event", "post_status" => "publish", "posts_per_page" => 25, "ignore_sticky_posts" => 0, "show_sticky" => true, "meta_query" => array( "event_start_date" => array( "key" => "_meta_event_start_date", "compare" => ">=", "value" => 0 ), "event_start_time" => array( "key" => "_meta_event_start_time", "compare" => ">=", "value" => 0 ) ), "orderby" => array( "event_start_date" => "ASC", "event_start_time" => "ASC" )
