[ci skip] Fix #3515
diff --git a/user_guide_src/source/libraries/caching.rst b/user_guide_src/source/libraries/caching.rst
index caece1a..86439b4 100644
--- a/user_guide_src/source/libraries/caching.rst
+++ b/user_guide_src/source/libraries/caching.rst
@@ -52,9 +52,9 @@
 Class Reference
 ***************
 
-.. class:: CI_Cache
+.. php:class:: CI_Cache
 
-	.. method:: is_supported($driver)
+	.. php:method:: is_supported($driver)
 
 		:param	string	$driver: the name of the caching driver
 		:returns:	TRUE if supported, FALSE if not
@@ -74,7 +74,7 @@
 				}
 			}
 
-	.. method:: get($id)
+	.. php:method:: get($id)
 
 		:param	string	$id: Cache item name
 		:returns:	Item value or FALSE if not found
@@ -86,7 +86,7 @@
 
 			$foo = $this->cache->get('my_cached_item');
 
-	.. method:: save($id, $data[, $ttl = 60[, $raw = FALSE]])
+	.. php:method:: save($id, $data[, $ttl = 60[, $raw = FALSE]])
 
 		:param	string	$id: Cache item name
 		:param	mixed	$data: the data to save
@@ -104,7 +104,7 @@
 		.. note:: The ``$raw`` parameter is only utilized by APC and Memcache,
 			in order to allow usage of ``increment()`` and ``decrement()``.
 
-	.. method:: delete($id)
+	.. php:method:: delete($id)
 
 		:param	string	$id: name of cached item
 		:returns:	TRUE on success, FALSE on failure
@@ -116,7 +116,7 @@
 
 			$this->cache->delete('cache_item_id');
 
-	.. method:: increment($id[, $offset = 1])
+	.. php:method:: increment($id[, $offset = 1])
 
 		:param	string	$id: Cache ID
 		:param	int	$offset: Step/value to add
@@ -132,7 +132,7 @@
 
 			$this->cache->increment('iterator', 3); // 'iterator' is now 6
 
-	.. method:: decrement($id[, $offset = 1])
+	.. php:method:: decrement($id[, $offset = 1])
 
 		:param	string	$id: Cache ID
 		:param	int	$offset: Step/value to reduce by
@@ -148,7 +148,7 @@
 
 			$this->cache->decrement('iterator', 2); // 'iterator' is now 3
 
-	.. method:: clean()
+	.. php:method:: clean()
 
 		:returns:	TRUE on success, FALSE on failure
 		:rtype:	bool
@@ -159,7 +159,7 @@
 
 			$this->cache->clean();
 
-	.. method:: cache_info()
+	.. php:method:: cache_info()
 
 		:returns:	Information on the entire cache database
 		:rtype:	mixed
@@ -172,7 +172,7 @@
 		.. note:: The information returned and the structure of the data is dependent
 			on which adapter is being used.
 
-	.. method:: get_metadata($id)
+	.. php:method:: get_metadata($id)
 
 		:param	string	$id: Cache item name
 		:returns:	Metadata for the cached item