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wp query - WP_Query by Category Name - WordPress ...

    https://wordpress.stackexchange.com/questions/161071/wp-query-by-category-name
    category is a valid parameter for get_posts, not for WP_Query. Here are the valid category parameters for WP_Query. cat (int) - use category id. category_name (string) - use category slug (NOT name). category__and (array) - use category id. category__in (array) - use category id. category__not_in (array) - use category id.

WP_Query Class WordPress Developer Resources

    https://developer.wordpress.org/reference/classes/wp_query/
    $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 posts except those from a category by prefixing its id with a ‘-‘ (minus) sign. $query = new WP_Query( array( 'cat' => '-12,-34,-56' ) );

What is WP_Query in WordPress?

    https://www.wpbeginner.com/glossary/wp_query/
    It is possible for developers to directly query WordPress database. However, WP_Query is one of the recommended ways to query posts from WordPress database. Below is an example of a simple WP_Query which displays posts from movies category: <?php // The Query $the_query = new WP_Query( 'category_name=movies' ); ?>

wp_get_post_categories() Function WordPress Developer ...

    https://developer.wordpress.org/reference/functions/wp_get_post_categories/
    function wp_get_post_categories ( $post_id = 0, $args = array() ) {. $post_id = (int) $post_id; $defaults = array( 'fields' => 'ids' ); $args = wp_parse_args ( $args, $defaults ); $cats = wp_get_object_terms ( $post_id, 'category', $args ); return $cats; } Expand full source …

get_queried_object() Function WordPress Developer ...

    https://developer.wordpress.org/reference/functions/get_queried_object/
    – If you have set a posts page where your basic posts are displayed, get_queried_object () will return the WP_Post object of that page. – On post type archive pages, it will return the WP_Post_Type object of the given post type. – On an author archive page, it will return the WP_User object of that author.

category_exists() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/category_exists/
    Check whether a category exists.

What is a Category? How to Use Categories in WordPress

    https://www.wpbeginner.com/glossary/category/
    WPBeginner is a free WordPress resource site for Beginners. WPBeginner was founded in July 2009 by Syed Balkhi.The main goal of this site is to provide quality tips, tricks, hacks, and other WordPress resources that allows WordPress beginners to improve their site(s).
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