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Multiple meta keys in wp_query WordPress.org

    https://wordpress.org/support/topic/multiple-meta-keys-in-wp_query/
    // get date values from DB $start = get_post_meta( get_the_ID(), 'event-start-date', true ); $end = get_post_meta( get_the_ID(), 'event-end-date', true ); // determine which key to use if ($start == $end) : if (!empty('event-order')) : $key = 'event-order'; else : $key = 'event-start-date'; endif; else : $key = 'event-start-date'; endif;

wordpress - How to order by multiple meta keys? - Stack ...

    https://stackoverflow.com/questions/17745334/how-to-order-by-multiple-meta-keys
    This is something that WordPress added support for in 4.2: ... This answers "If I query by multiple meta keys, how do I order by a single meta key?" what was asked was "I am pulling in posts, and need to order them using multiple meta keys". – Tom J Nowell Feb 7 '14 at 16:39.

Support for multiple meta_key => meta ... - WordPress Trac

    https://core.trac.wordpress.org/ticket/14645
    Typically specifying meta_keys and values as arrays: $queyr = new WP_Query( array( 'meta_key' = array( 'time', 'event' ), 'meta_value' = array( 'today', 'show' ), meta_compare = array( '=', '=' ) ) ); Alternatively it could use an associative array, but you would still need a second array to specify different meta_compare's.

WP_Meta_Query Class WordPress Developer Resources

    https://developer.wordpress.org/reference/classes/wp_meta_query/
    Named sub-meta queries and multiple orderby arguments. Named meta sub-queries are particularly useful when you wish to sort by multiple different meta keys. If you pass the name (key) of your meta sub-query to the orderby array, WordPress will use that sub-query as the orderby parameter. See this example below:

Ultimate Guide to meta_query of WordPress WP_Query

    https://rudrastyh.com/wordpress/meta_query.html
    $args = array (// another WP_Query parameters); $args ['meta_query'] = array (); if ($_POST ['nokia'] == 'on' && $_POST ['apple'] == 'on') $args ['meta_query'] [] = array ('key' => 'phone', // this is your meta key, it may be different on your website 'value' => array ('nokia', 'apple'), 'compare' => 'IN'); if ($_POST ['nokia'] == 'on') $args ['meta_query'] [] = array ('key' => 'phone', // this is your meta key, …

Wordpress: Single meta key with multiple meta value in ...

    https://www.youtube.com/watch?v=T-8WHk3UqOg
    Wordpress: Single meta key with multiple meta value in like comparisonHelpful? Please support me on Patreon: https://www.patreon.com/roelvandepaarWith thank...

add_post_meta() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/add_post_meta/
    function add_post_meta( $post_id, $meta_key, $meta_value, $unique = false ) { // Make sure meta is added to the post, not a revision. $the_post = wp_is_post_revision( $post_id ); if ( $the_post ) { $post_id = $the_post; } return add_metadata( 'post', $post_id, $meta_key, $meta_value, $unique ); }

#9167 (query_posts('meta_key=foo ... - WordPress Trac

    https://core.trac.wordpress.org/ticket/9167
    SELECT wp_posts.*, wp_postmeta.meta_value FROM wp_posts LEFT JOIN wp_postmeta ON (wp_posts.ID = wp_postmeta.post_id) WHERE wp_postmeta.meta_key = 'some_key' instead, we could use a sub-query and eliminate duplicate posts. SELECT wp_posts.* FROM wp_posts WHERE wp_posts.ID IN (SELECT post_id FROM wp_postmeta WHERE meta_key = …

Displaying Posts Using a Custom Select Query - WordPress

    https://codex.wordpress.org/Displaying_Posts_Using_a_Custom_Select_Query
    Description. At some point in your WordPress development career you may be presented with the need to display one or more posts using SELECT criteria not provided by WordPress' query_posts architecture. For instance, it may become necessary to JOIN WordPress tables to determine which posts should be displayed, or you may want to use data stored in your own …
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