WordPress at a glance
filter is not described

content_url filter-hook . WP 2.8.0

Filters the URL to the content directory.


add_filter( 'content_url', 'filter_function_name_8421', 10, 2 );
function filter_function_name_8421( $url, $path ){
	// filter...

	return $url;
The complete URL to the content directory including scheme and path.
Path relative to the URL to the content directory. Blank string if no path is specified.

Where the hook is called

wp-includes/link-template.php 3289
return apply_filters( 'content_url', $url, $path );

Where the hook is used (in WP core)

Does not used.