Allow passing stdClass and WP_User to wp_insert_user() and wp_update_user(). Introduce WP_User::to_array(). Eliminate uses of get_object_vars() when passing to wp_*_user(). fixes #21429

git-svn-id: https://develop.svn.wordpress.org/trunk@21496 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/capabilities.php

@@ -665,6 +665,17 @@ class WP_User {
 		return $this->__isset( $key );
 	}
 
+	/*
+	 * Return an array representation.
+	 *
+	 * @since 3.5.0
+	 *
+	 * @return array Array representation.
+	 */
+	function to_array() {
+		return get_object_vars( $this->data );
+	}
+
 	/**
 	 * Set up capability object properties.
 	 *