http_headers_useragent filter-hook . WP 2.7.0

Filters the user agent value sent with an HTTP request.

Usage

add_filter( 'http_headers_useragent', 'filter_function_name_3221', 10, 2 );
function filter_function_name_3221( $user_agent, $url ){
	// filter...

	return $user_agent;
}

$user_agent(string)

WordPress user agent string.

$url(string)

The request URL.

Notes

• Since 5.1.0 The $url parameter was added.

Where the hook is called

'user-agent'          => apply_filters( 'http_headers_useragent', 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ), $url ),

$user_agent = apply_filters( 'http_headers_useragent', 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ), $url );

Where the hook is used (in WP core)