Ticket #17267: 17267-2.diff

wp-content/themes/twentyeleven/functions.php

@@ -448 +448 @@
         <?php endif;
 }
 
-/**
- * Grab the first URL from a Link post
- */
+// Return the URL for the first link found in the post content.
 function twentyeleven_url_grabber() {
-        global $post, $posts;
-
-        $first_url = '';
-
-        ob_start();
-        ob_end_clean();
-
-        $output = preg_match_all('/<a.+href=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
-
-        $first_url = $matches [1] [0];
-
-        if ( empty( $first_url ) )
+        if ( ! preg_match( '/<a\s[^>]*?href=[\'"](.+?)[\'"]/is', get_the_content(), $matches ) )
                 return false;
 
-        return $first_url;
+        return esc_url_raw( $matches[1] );
 }
 
 /**