WordPress at a glance
filter is not described

pingback_useragent filter-hook . WP 2.9.0

Filters the user agent sent when pinging-back a URL.


add_filter( 'pingback_useragent', 'filter_function_name_5886', 10, 5 );
function filter_function_name_5886( $concat_useragent, $useragent, $pingback_server_url, $pagelinkedto, $pagelinkedfrom ){
	// filter...

	return $concat_useragent;
The user agent concatenated with ' -- WordPress/' and the WordPress version.
The useragent.
The server URL being linked to.
URL of page linked to.
URL of page linked from.


Since 2.9.0 Introduced.

Where the hook is called

wp-includes/comment.php 2877
$client->useragent = apply_filters( 'pingback_useragent', $client->useragent . ' -- WordPress/' . get_bloginfo( 'version' ), $client->useragent, $pingback_server_url, $pagelinkedto, $pagelinkedfrom );

Where the hook is used (in WP core)

Usage not found!