View difference between Paste ID: DVEcci3e and

-
+<?php
 
 class Nfr_Menu_Walker extends Walker_Nav_Menu{
 
 		/**
 	 * Traverse elements to create list from elements.
 	 *
 	 * Display one element if the element doesn't have any children otherwise,
 	 * display the element and its children. Will only traverse up to the max
 	 * depth and no ignore elements under that depth. It is possible to set the
 	 * max depth to include all depths, see walk() method.
 	 *
 	 * This method shouldn't be called directly, use the walk() method instead.
 	 *
 	 * @since 2.5.0
 	 *
 	 * @param object $element Data object
 	 * @param array $children_elements List of elements to continue traversing.
 	 * @param int $max_depth Max depth to traverse.
 	 * @param int $depth Depth of current element.
 	 * @param array $args
 	 * @param string $output Passed by reference. Used to append additional content.
 	 * @return null Null on failure with no changes to parameters.
 	 */
 	function display_element( $element, &$children_elements, $max_depth, $depth=0, $args, &$output ) {
 
 		if ( !$element )
 			return;
 
 		$id_field = $this->db_fields['id'];
 
 		//display this element
 		if ( is_array( $args[0] ) )
 			$args[0]['has_children'] = ! empty( $children_elements[$element->$id_field] );
 
 		//Adds the 'parent' class to the current item if it has children
 		if( ! empty( $children_elements[$element->$id_field] ) )
 			array_push($element->classes,'parent');
 
 		$cb_args = array_merge( array(&$output, $element, $depth), $args);
 
 		call_user_func_array(array(&$this, 'start_el'), $cb_args);
 
 		$id = $element->$id_field;
 
 		// descend only when the depth is right and there are childrens for this element
 		if ( ($max_depth == 0 || $max_depth > $depth+1 ) && isset( $children_elements[$id]) ) {
 
 			foreach( $children_elements[ $id ] as $child ){
 
 				if ( !isset($newlevel) ) {
 					$newlevel = true;
 					//start the child delimiter
 					$cb_args = array_merge( array(&$output, $depth), $args);
 					call_user_func_array(array(&$this, 'start_lvl'), $cb_args);
 				}
 				$this->display_element( $child, $children_elements, $max_depth, $depth + 1, $args, $output );
 			}
 			unset( $children_elements[ $id ] );
 		}
 
 		if ( isset($newlevel) && $newlevel ){
 			//end the child delimiter
 			$cb_args = array_merge( array(&$output, $depth), $args);
 			call_user_func_array(array(&$this, 'end_lvl'), $cb_args);
 		}
 
 		//end this element
 		$cb_args = array_merge( array(&$output, $element, $depth), $args);
 		call_user_func_array(array(&$this, 'end_el'), $cb_args);
 	}
 }