php - How to order by two different things at once in a query in WordPress -

I'm having a problem I'm trying to get the latest 12 posts through custom meta fields. Out of those 12 posts, I want to order them from the date of the post. So first I pull 12 posts using custom meta fields and order them to find the latest through the Meta field. Once I have, I want to order them again with the latest post.

This is my current code, I do not know how I can keep two order-bills in a query ...

  $ Recent Episodes 12 = New WP_Query (Array ('Posts_per_page' = & gt; 12, 'Post_type' = & gt; 'Post', 'Meta_Key' = & gt; 'AirDate', 'Order' => 'DESC', 'Orderbie' = & Array ('key' = & gt; 'air_date',), array ('key' = 'gt;' already fixed ',' value ',' meta_view_num ',' meta_query '= & gt; array '= & Gt;' yes', 'compare' = & gt; '=')),));    
 
 
, you have to separate them from one location:  
 
  Multiple 'orderbird' values ​​  
 Show pages sorted by 'title' and 'menu_order' (Title is effective):  
  $ query = new WP_Query (array ('post_type' = & gt; 'page', 'orderbie' = & gt; 'title menu_order', 'order' = & Gt; 'ASS'));    
 In your case, it will look like this:  
  'orderby' = & gt; 'Meta_value_num date'   
  Edit:  OK, it seems that you are trying to do a bit more complex work here.  according to <12>   air_date  only 12 latest items.  
 Order  date  by 12 items.   
 What  orderby  originally:  
 
 Order by  air_date .  
 If an item contains  same   air_date  values, order them from  date .  
 Keep only the top 12 items.   
 The difference is that  you want to differentiate only by  air_date , while the  normal use of orderby  is the use of both parameters Does it to determine that the item ends in the result.  
 I do not know an easy way to solve it, though. However, since you only want to change the  display order  of the resulting items, you can only fix it yourself, instead of  get_posts   WP_Query  And PHP's  
  $ posts = get_posts (...); Usort ($ posts, '__sort_by_date_desc'); Create a timestamp from the function __sort_by_date_desc ($ a, $ b) {// MySQL date time values ​​$ a_date = mysql2date ('U', $ a-> post_date); $ B_date = mysql2date ('u', $ b- & gt; post_date); // In descending order, swap these to return withdrawals $ b_date - $ a_date; }