WordPress Version: 6.3
/**
* Returns the content type for specified feed type.
*
* @since 2.8.0
*
* @param string $type Type of feed. Possible values include 'rss', rss2', 'atom', and 'rdf'.
* @return string Content type for specified feed type.
*/
function feed_content_type($type = '')
{
if (empty($type)) {
$type = get_default_feed();
}
$types = array('rss' => 'application/rss+xml', 'rss2' => 'application/rss+xml', 'rss-http' => 'text/xml', 'atom' => 'application/atom+xml', 'rdf' => 'application/rdf+xml');
$content_type = (!empty($types[$type])) ? $types[$type] : 'application/octet-stream';
/**
* Filters the content type for a specific feed type.
*
* @since 2.8.0
*
* @param string $content_type Content type indicating the type of data that a feed contains.
* @param string $type Type of feed. Possible values include 'rss', rss2', 'atom', and 'rdf'.
*/
return apply_filters('feed_content_type', $content_type, $type);
}