X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/699231ae09f7057a4d0000cdf32e50a3df6a04ca..8a4706fdeb1ae30268e510df6ccf3c39b3028059:/wp-includes/category.php

diff --git a/wp-includes/category.php b/wp-includes/category.php
index 1f665185..adac2475 100644
--- a/wp-includes/category.php
+++ b/wp-includes/category.php
@@ -36,7 +36,7 @@ function get_all_category_ids() {
  * @param string|array $args Optional. Change the defaults retrieving categories.
  * @return array List of categories.
  */
-function &get_categories( $args = '' ) {
+function get_categories( $args = '' ) {
 	$defaults = array( 'taxonomy' => 'category' );
 	$args = wp_parse_args( $args, $defaults );
 
@@ -78,7 +78,7 @@ function &get_categories( $args = '' ) {
  * @param string $filter Optional. Default is raw or no WordPress defined filter will applied.
  * @return mixed Category data in type defined by $output parameter.
  */
-function &get_category( $category, $output = OBJECT, $filter = 'raw' ) {
+function get_category( $category, $output = OBJECT, $filter = 'raw' ) {
 	$category = get_term( $category, 'category', $output, $filter );
 	if ( is_wp_error( $category ) )
 		return $category;
@@ -160,23 +160,21 @@ function get_category_by_slug( $slug  ) {
 	return $category;
 }
 
-
 /**
  * Retrieve the ID of a category from its name.
  *
  * @since 1.0.0
  *
- * @param string $cat_name Optional. Default is 'General' and can be any category name.
+ * @param string $cat_name Category name.
  * @return int 0, if failure and ID of category on success.
  */
-function get_cat_ID( $cat_name='General' ) {
+function get_cat_ID( $cat_name ) {
 	$cat = get_term_by( 'name', $cat_name, 'category' );
 	if ( $cat )
 		return $cat->term_id;
 	return 0;
 }
 
-
 /**
  * Retrieve the name of a category from its ID.
  *
@@ -187,13 +185,12 @@ function get_cat_ID( $cat_name='General' ) {
  */
 function get_cat_name( $cat_id ) {
 	$cat_id = (int) $cat_id;
-	$category = &get_category( $cat_id );
+	$category = get_category( $cat_id );
 	if ( ! $category || is_wp_error( $category ) )
 		return '';
 	return $category->name;
 }
 
-
 /**
  * Check if a category is an ancestor of another category.
  *
@@ -207,20 +204,9 @@ function get_cat_name( $cat_id ) {
  * @return bool Whether $cat2 is child of $cat1
  */
 function cat_is_ancestor_of( $cat1, $cat2 ) {
-	if ( ! isset($cat1->term_id) )
-		$cat1 = &get_category( $cat1 );
-	if ( ! isset($cat2->parent) )
-		$cat2 = &get_category( $cat2 );
-
-	if ( empty($cat1->term_id) || empty($cat2->parent) )
-		return false;
-	if ( $cat2->parent == $cat1->term_id )
-		return true;
-
-	return cat_is_ancestor_of( $cat1, get_category( $cat2->parent ) );
+	return term_is_ancestor_of( $cat1, $cat2, 'category' );
 }
 
-
 /**
  * Sanitizes category data based on context.
  *
@@ -235,7 +221,6 @@ function sanitize_category( $category, $context = 'display' ) {
 	return sanitize_term( $category, 'category', $context );
 }
 
-
 /**
  * Sanitizes data in single category key field.
  *
@@ -254,7 +239,6 @@ function sanitize_category_field( $field, $value, $cat_id, $context ) {
 
 /* Tags */
 
-
 /**
  * Retrieves all post tags.
  *
@@ -265,7 +249,7 @@ function sanitize_category_field( $field, $value, $cat_id, $context ) {
  * @param string|array $args Tag arguments to use when retrieving tags.
  * @return array List of tags.
  */
-function &get_tags( $args = '' ) {
+function get_tags( $args = '' ) {
 	$tags = get_terms( 'post_tag', $args );
 
 	if ( empty( $tags ) ) {
@@ -277,7 +261,6 @@ function &get_tags( $args = '' ) {
 	return $tags;
 }
 
-
 /**
  * Retrieve post tag by tag ID or tag object.
  *
@@ -297,30 +280,12 @@ function &get_tags( $args = '' ) {
  * @param string $filter Optional. Default is raw or no WordPress defined filter will applied.
  * @return object|array Return type based on $output value.
  */
-function &get_tag( $tag, $output = OBJECT, $filter = 'raw' ) {
+function get_tag( $tag, $output = OBJECT, $filter = 'raw' ) {
 	return get_term( $tag, 'post_tag', $output, $filter );
 }
 
-
 /* Cache */
 
-
-/**
- * Update the categories cache.
- *
- * This function does not appear to be used anymore or does not appear to be
- * needed. It might be a legacy function left over from when there was a need
- * for updating the category cache.
- *
- * @since 1.5.0
- *
- * @return bool Always return True
- */
-function update_category_cache() {
-	return true;
-}
-
-
 /**
  * Remove the category cache data based on ID.
  *
@@ -333,7 +298,6 @@ function clean_category_cache( $id ) {
 	clean_term_cache( $id, 'category' );
 }
 
-
 /**
  * Update category structure to old pre 2.3 from new taxonomy structure.
  *
@@ -370,6 +334,3 @@ function _make_cat_compat( &$category ) {
 		$category['category_parent'] = &$category['parent'];
 	}
 }
-
-
-?>