In Walker:

* Every subclass of `Walker` overrides `$db_fields` and makes it public
* `wp_list_comments()` accesses `->max_pages` on an instance of `Walker`, it must be public
* `$has_children` was added as `protected` in 4.0. doesn't need BC

Make `$db_fields` and `$max_pages` public and remove magic methods.

See #30891.


git-svn-id: https://develop.svn.wordpress.org/trunk@31137 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-walker.php

@@ -25,19 +25,17 @@ class Walker {
 	 * DB fields to use.
 	 *
 	 * @since 2.1.0
-	 * @access protected
 	 * @var array
 	 */
-	protected $db_fields;
+	public $db_fields;
 
 	/**
 	 * Max number of pages walked by the paged walker
 	 *
 	 * @since 2.7.0
-	 * @access protected
 	 * @var int
 	 */
-	protected $max_pages = 1;
+	public $max_pages = 1;
 
 	/**
 	 * Whether the current element has children or not.
@@ -50,58 +48,6 @@ class Walker {
 	 */
 	protected $has_children;
 
-	/**
-	 * Make private properties readable for backwards compatibility.
-	 *
-	 * @since 4.0.0
-	 * @access public
-	 *
-	 * @param string $name Property to get.
-	 * @return mixed Property.
-	 */
-	public function __get( $name ) {
-		return $this->$name;
-	}
-
-	/**
-	 * Make private properties settable for backwards compatibility.
-	 *
-	 * @since 4.0.0
-	 * @access public
-	 *
-	 * @param string $name  Property to set.
-	 * @param mixed  $value Property value.
-	 * @return mixed Newly-set property.
-	 */
-	public function __set( $name, $value ) {
-		return $this->$name = $value;
-	}
-
-	/**
-	 * Make private properties checkable for backwards compatibility.
-	 *
-	 * @since 4.0.0
-	 * @access public
-	 *
-	 * @param string $name Property to check if set.
-	 * @return bool Whether the property is set.
-	 */
-	public function __isset( $name ) {
-		return isset( $this->$name );
-	}
-
-	/**
-	 * Make private properties un-settable for backwards compatibility.
-	 *
-	 * @since 4.0.0
-	 * @access public
-	 *
-	 * @param string $name Property to unset.
-	 */
-	public function __unset( $name ) {
-		unset( $this->$name );
-	}
-
 	/**
 	 * Starts the list before the elements are added.
 	 *