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WP_Query Class WordPress Developer Resources

    https://developer.wordpress.org/reference/classes/wp_query/
    Display posts that have several categories, using category id: $query = new WP_Query( array( 'cat' => '2,6,17,38' ) ); Display posts that have these categories, using category slug: $query = new WP_Query( array( 'category_name' => 'staff,news' ) ); Display posts that have “all” of these categories: $query = new WP_Query( array( 'category_name' => 'staff+news' ) ); Display all …

mysql - How does Wordpress link posts to categories in its ...

    https://stackoverflow.com/questions/2848505/how-does-wordpress-link-posts-to-categories-in-its-database
    SELECT p.ID, t.term_id FROM wp_posts p LEFT JOIN wp_term_relationships rel ON rel.object_id = p.ID LEFT JOIN wp_term_taxonomy tax ON tax.term_taxonomy_id = rel.term_taxonomy_id LEFT JOIN wp_terms t ON t.term_id = tax.term_id But it should be noted that the wordpress database might change at any time, and you should use the Wordpress …

Display Posts From Specific Category On A WordPress Page ...

    https://artisansweb.net/display-posts-specific-category-wordpress-page/
    May 29, 2020 · The user can also pass the category id instead of category_name. In that case, you should use the key as ‘cat’ in place of ‘category_name’ and pass the id of a category. $args = array( 'post_type' => 'post', 'post_status' => 'publish', 'cat' => '4', //you can pass comma-separated ids here 'posts_per_page' => 5, );

category_description() Function WordPress Developer ...

    https://developer.wordpress.org/reference/functions/category_description/
    Displays the description of a category, given its id, by echoing the return value of the tag. If no category given and used on a category page, it returns the description of the current category. <div><?php echo category_description(3); ?></div> Result:

category_exists() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/category_exists/
    function category_exists( $cat_name, $parent = null ) { $id = term_exists( $cat_name, 'category', $parent ); if ( is_array( $id ) ) { $id = $id['term_id']; } return $id; } Expand full source code …

wp_get_post_categories() Function WordPress Developer ...

    https://developer.wordpress.org/reference/functions/wp_get_post_categories/
    The example below shows how categories are retrieved, and then additional information is retrieved for each category. $post_categories = wp_get_post_categories( $post_id ); $cats = array(); foreach($post_categories as $c){ $cat = get_category( $c ); $cats[] = array( 'name' => $cat->name, 'slug' => $cat->slug ); }

wp_insert_category() Function WordPress Developer ...

    https://developer.wordpress.org/reference/functions/wp_insert_category/
    To insert a new category: //Define the category $wpdocs_cat = array('cat_name' => 'Wpdocs Category', 'category_description' => 'A Cool Category', 'category_nicename' => 'category-slug', 'category_parent' => ''); // Create the category $wpdocs_cat_id = wp_insert_category($wpdocs_cat);
    [CATITEMSBL#1]

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