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benecaster_feed_namespaces

Filter Free

Filters the list of namespace handlers registered for the RSS feed. Each handler declares an XML namespace URI and emits the corresponding elements into the feed output. Fires once per feed render, before namespace declarations are written to the XML.

Return the array. Cast with (array).

⚠⚠ The entries are OBJECT INSTANCES implementing FeedNamespaceInterface, not class names and not arrays. Immediately after the filter, core keeps only what passes $h instanceof FeedNamespaceInterface and discards the rest silently:

array_filter( $handlers, fn( $h ) => $h instanceof FeedNamespaceInterface )

So appending a class-string, a closure or a config array removes nothing and adds nothing — the entry simply vanishes, with no error anywhere. Append new My_Namespace_Handler().

Returning an empty array compiles a feed with no namespace handlers at all, which strips the iTunes, content and podcast namespaces and produces a feed Apple will reject. Reordering the array reorders handler execution.

Parameters

Name Type Default Description
$handlers array — Array of namespace handler objects

Returns: array

Example

add_filter( 'benecaster_feed_namespaces', function( $handlers ) {
    // Register a custom namespace handler that emits <myns:> tags.
    $handlers[] = new MyPlugin_CustomFeedNamespace();
    return $handlers;
} );

Affects

  • RSS feed XML namespace declarations

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