Ticket #15458: set.15458.diff

wp-includes/capabilities.php

@@ -507 +507 @@
          * @since 3.3.0
          */
         function __set( $key, $value ) {
+                if ( 'id' == $key ) {
+                        _deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
+                        $this->ID = $value;
+                        return;
+                }
+
                 $this->data->$key = $value;
         }