Some minor corrections to avoid empty items

main/admin/access_url_edit_users_to_url.php

@@ -107,7 +107,6 @@ if ($_POST['form_sent']) {
 		} elseif (is_array($UserList)) {
 			$result     = UrlManager::update_urls_rel_user($UserList, $access_url_id);
             $url_info   = UrlManager::get_url_data_from_id($access_url_id);            
-            
             if (!empty($result)) {
                 $message .= 'URL: '.$url_info['url'].'<br />';
             }
@@ -118,9 +117,11 @@ if ($_POST['form_sent']) {
                 $user_added_list = array();
                 foreach($result['users_added'] as $user) {
                     $user_info = api_get_user_info($user);
+                    if (!empty($user_info)) {
                         $user_added_list[] = $i.'. '.api_get_person_name($user_info['firstname'], $user_info['lastname']);
                         $i++;
                     }
+                }
                 if (!empty($user_added_list)) {
                     $message .= implode(', ', $user_added_list);
                 }                
@@ -132,9 +133,11 @@ if ($_POST['form_sent']) {
                 $i = 1;
                 foreach($result['users_deleted'] as $user) {
                     $user_info = api_get_user_info($user);
+                    if (!empty($user_info)) {
                         $user_deleted_list [] = $i.'. '.api_get_person_name($user_info['firstname'], $user_info['lastname']);
                         $i++;
                     }
+                }
                 if (!empty($user_deleted_list)) {
                     $message .= implode(', ', $user_deleted_list);
                 }

main/inc/lib/urlmanager.lib.php

@@ -453,8 +453,11 @@ class UrlManager
 	* */
 	public static function delete_url_rel_user($user_id, $url_id) {
 		$table_url_rel_user= Database :: get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
+        $result = true;
+        if (!empty($user_id) && !empty($url_id)) {
             $sql= "DELETE FROM $table_url_rel_user WHERE user_id = ".Database::escape_string($user_id)." AND access_url_id = ".Database::escape_string($url_id);
             $result = Database::query($sql);
+        }
 		return $result;
 	}