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get_post_meta() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/get_post_meta/
    63 rows · If the value of the $key parameter is falsy get_post_meta will return the entire post meta array, even if $single is set to true. for example: get_post_meta( $post_id, FALSE, TRUE); //Returns all the post meta fields as an array. get_post_meta( $post_id, '0', TRUE); //Will also return all the post meta fields as an array.

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 ); }

Understanding and using Post meta in WordPress - Designmodo

    https://designmodo.com/wordpress-post-meta/
    Jan 24, 2013 · WordPress provides functions to update the post meta called update_post_meta. The update_post_meta function takes the first argument as post ID, the second is the meta key, the third is the meta value and the fourth is an optional argument that takes the previous value you want to update. update_post_meta calls add_post_meta in case the key is not already …

How To Add Post Meta In WordPress – Vegibit

    https://vegibit.com/how-to-add-post-meta-in-wordpress/
    Often times on a WordPress site, when you see the post meta that includes the author name of a post, there is a link you can click on to see more posts by that author. This is accomplished by setting up a link to an author archives page. This way you can see all the posts published by only that particular author.
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