chamilo / chamilo-lms

				}

				// Updating prerequisites

				foreach ($old_prerequisite  as $key=>$my_old_prerequisite) {

					if($my_old_prerequisite != ''){

						$sql = "UPDATE ".$table_item." SET prerequisite = '".$my_old_prerequisite."'

						        WHERE c_id = ".$this->destination_course_id." AND id = '".$key."'  ";

						Database::query($sql);

					}

				}

				// Updating refs

				foreach ($old_refs  as $key=>$my_old_ref) {

				}

				// Updating refs

				foreach ($old_refs  as $key=>$my_old_ref) {

					if ($my_old_ref != '') {

						$sql = "UPDATE ".$table_item." SET ref = '".$my_old_ref."'

						        WHERE c_id = ".$this->destination_course_id." AND id = '".$key."'  ";

						Database::query($sql);

					}

				}

				foreach ($parent_item_ids as $new_item_id => $parent_item_old_id) {

					$parent_new_id = 0;