Can i merge 2 new WP_Query($variable) 's?

Question

I am running a multisite network and i have setup a sql query that uses swith_to_blog(); and queries the posts.

Is there a way that i can declare the query inside a new WP_Query and actually merge that query with another?

Basically if i do this:

$number1 = new WP_Query($multisitequery);

Can i merge it with:

$number2 = new WP_Query($normalquery);

$normalquery holds settings like pagination, per page, excerpt, title etc... on a portfolio shortcode.

I would like it to include queried posts from my new $multisite query.

Can this be achieved? Just wanting to save me from creating a whole new shortcode setup lol

Many thanks in advance. Rory

EDIT========

What i have is:

$portfolio = array();
$portfolio = $settings;

Further down my portfolio function "after all the $settings['options']" i have:

$portfolio_query = new WP_Query( $portfolio );

the $portfolio_query uses a loop on a page template.

I want to add an extra query into this like so:

global $wpdb, $blog_id, $post;

$blogs = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM wp_blogs ORDER BY blog_id" ) );

$globalcontainer = array();

foreach ($blogs as $blog){

   switch_to_blog($blog->blog_id);

   $globalquery = query_posts($args);

   $globalcontainer = array_merge( $globalcontainer, $globalquery );

   restore_current_blog();
}

where i assume that $globalcontainer would be the array to merge into the wp_query();.

So taking onboard what you have replied with, in theory i could simply:

$mergedqueryargs = array_merge($portfolio , $globalcontainer);
$portfolio_query = new WP_query($mergedqueryargs);

Would that be correct?

Second, regarding the array_merge array key overwrite..... How would i go about stopping an overwrite?

Answer 1

You won't do much good just merging the arguments, you need to merge the resulting posts array and the post_count count. This works for me:

//setup your queries as you already do
$query1 = new WP_Query($args_for_query1);
$query2 = new WP_Query($args_for_query2);

//create new empty query and populate it with the other two
$wp_query = new WP_Query();
$wp_query->posts = array_merge( $query1->posts, $query2->posts );

//populate post_count count for the loop to work correctly
$wp_query->post_count = $query1->post_count + $query2->post_count;

Answer 2

I generally merge their ID arrays and make a third query. To keep first set of queries cheap I only return their ID's using fields parameter like this:

//setup your queries with extra parameter fields => ids
$query1 = new WP_Query(array('fields' => 'ids','other_parameters' => 'etc'));
$query2 = new WP_Query(array('fields' => 'ids','other_parameters'=>'etc'));

//now you got post IDs in $query->posts
$allTheIDs = array_merge($query1->posts,$query2->posts);

//new query, using post__in parameter
$finalQuery = new WP_Query(array('post__in' => $allTheIDs));

Hope this helps

---EDIT---

After my answer original question is edited for multisite details. In case of multisite post merges this does not work.

Answer 3

So, if you have this:

$number1 = new WP_Query($multisitequery);

$number2 = new WP_Query($normalquery);

I assume you define these somewhere previous?

$multisitequery = array();
$normalquery = array();

...in which case, to merge the two queries, just array_merge() the two arrays before passing them to new WP_Query():

$merged_query_args = array_merge( $normalquery, $multisitequery );

$merged_query = new WP_Query( $merged_query_args );

Note that order is important in the array_merge() call. If both have the same array key, the second array will overwrite the first array.

Answer 4

Thus, you can glue two WP_Query queries with different post_type or other sorting data, for example, and then glue them by ids into one WP_Query query that will fully work - in order to preserve the sorting when gluing, you need to specify orderby => post__in

my example is how it creates a new WP_Query cycle and can affect any other cycle for displaying posts by calling new global_change_of_sorting_posts->change_query_posts() => query_posts() you need to call before processing the cycle for displaying posts!

class global_change_of_sorting_posts
{
    public function get_posts_ids()
    {
        $query1 = new WP_Query([
            'fields' => 'ids',
            'posts_per_page' => -1,
            'post_type' => 'post',
        ]);
        $query2 = new WP_Query([
            'posts_per_page' => -1,
            'fields' => 'ids',
            'post_type' => 'custom-post',
        ]);
        $merge_ids_posts = $query1->posts + $query2->posts;
        wp_reset_query();
        return $merge_ids_posts;
    }

    public function get_posts_wp_query()
    {
        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
        $posts_per_page = 40;
        $wp_query = new WP_Query([
            'posts_per_page' => $posts_per_page,
            'paged' => $paged,
            'post__in' => $this->get_posts_ids(),
            'orderby' => 'post__in',
        ]);
        while ($wp_query->have_posts()) {
            $wp_query->the_post();

            var_dump(get_the_ID());
        }
    }

    public function change_query_posts($query_string)
    {
        parse_str($query_string, $args);
        $args['post__in'] = $this->get_posts_ids();
        $args['orderby'] = 'post__in';
        query_posts($args); # query conversion
    }
}