Allows you to define a link that is wrapped around WordPress widget titles.

widget_link_title.php

/*
Description: Allows you to define a link that is wrapped around widget titles.
Author: Justin Hebb - Jukah Digital
Based on: Plugin by  Dustin Dempsey - Playforward
*/
function widget_title_link( $title ) {

  // assume there's a link attached to the title because it contains a '|' followed by www., http, or /
	if ( preg_match('/\|(www.|http|\/).*/', $title) ) {

		// split our title in half
		$title_pieces = explode( "|", $title );

		// if there's two pieces
		if ( count( $title_pieces ) == 2 ) {

			// add http if it's just www
			if ( substr( $title_pieces[1], 0, 4) == "www." ) {
				$title_pieces[1] = str_replace( "www.", "http://www.", $title_pieces[1] );
			}

			// create new title from url and extracted title
			$title = '<a href="' . $title_pieces[1] . '" title="' . $title_pieces[0] . '">' . $title_pieces[0] . '</a>';
		}
	}

	return $title;
}
add_filter( "widget_title", "widget_title_link" );