The feed_content_type() WordPress PHP function provides the content type for a specified feed type.
Usage
Let’s imagine you want to get the content type of an ‘rss2’ feed. Here’s how you’d do it:
$content_type = feed_content_type('rss2');
echo $content_type;
This will output: ‘application/rss+xml’.
Parameters
- $type (string) Optional – Type of feed. Possible values include ‘rss’, ‘rss2’, ‘atom’, and ‘rdf’. Default value is ” (an empty string).
More information
See WordPress Developer Resources: feed_content_type()
This function was first implemented in WordPress version 2.8.0 and is not deprecated as of the latest version. The source code is located in wp-includes/feed.php.
Related functions include get_feed_link(), fetch_feed(), and get_comment_feed_link().
Examples
Get ‘atom’ Feed Content Type
Here’s how you can get the content type of an ‘atom’ feed.
$content_type = feed_content_type('atom');
echo $content_type;
This will output ‘application/atom+xml’.
Using Default Feed Type
In case you don’t specify the feed type, it will return the content type for ‘rss’ by default.
$content_type = feed_content_type(); echo $content_type;
This will output ‘application/rss+xml’.
Get ‘rdf’ Feed Content Type
To get the content type for an ‘rdf’ feed, use the following code:
$content_type = feed_content_type('rdf');
echo $content_type;
This will output ‘application/rdf+xml’.
Get ‘rss’ Feed Content Type
The following code snippet retrieves the content type for an ‘rss’ feed.
$content_type = feed_content_type('rss');
echo $content_type;
This will output ‘application/rss+xml’.
Handling Invalid Feed Type
If you supply an invalid feed type, the function will return ‘text/xml’ as the default content type.
$content_type = feed_content_type('invalid_type');
echo $content_type;
This will output ‘text/xml’.