WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
1705 | * The dynamic portion of the hook name, `$adjacent`, refers to the type |
1706 | * of adjacency, 'next' or 'previous'. |
1707 | * |
1708 | * @since 2.5.0 |
1709 | * @since 4.4.0 Added the `$post` parameter. |
1710 | * |
1711 | * @param string $order_by The `ORDER BY` clause in the SQL. |
1712 | * @param WP_Post $post WP_Post object. |
1713 | */ |
1714 | $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post ); |
1715 |
|
1716 | $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort"; |
1717 | $query_key = 'adjacent_post_' . md5( $query ); |
1718 | $result = wp_cache_get( $query_key, 'counts' ); |
1719 | if ( false !== $result ) { |
1720 | if ( $result ) |
1721 | $result = get_post( $result ); |
1722 | return $result; |
1723 | } |