is_feed()
Is the query for a feed?
For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.
No Hooks.
Return
true|false. Whether the query is for a feed.
Usage
is_feed( $feeds );
- $feeds(string|string[])
- Feed type or array of feed types to check against.
Default: ''
Examples
#1 Changing the request for feeds
Suppose we have a custom field skip_rss_flag where we set it to true if we want to exclude the post from the RSS feed.
Then, using the conditional tag is_feed(), we can change the request for our needs. To do this, insert the following code into the theme functions.php file and specify the custom field skip_rss_flag with the value true (or any other non-empty value) for the post you want to exclude from RSS:
add_filter( 'posts_where', 'skip_post_from_rss' );
function skip_post_from_rss( $where ){
global $wpdb;
// not feed.
if( ! is_feed() ){
return $where;
}
$where .= " AND $wpdb->posts.ID NOT IN (
SELECT distinct(post_id) from $wpdb->postmeta
where $wpdb->postmeta.meta_key = 'skip_rss_flag'
) ";
return $where;
}
Notes
- Global. WP_Query. $wp_query WordPress Query object.
Changelog
| Since 1.5.0 | Introduced. |
is_feed() is feed code WP 6.6.2
function is_feed( $feeds = '' ) {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_feed( $feeds );
}