PHP 8.1 compatibility

system/libs/pot/OTS_Container.php

@@ -15,11 +15,11 @@
 
 /**
  * Container item representation.
- * 
+ *
  * <p>
  * This class represents items that can contain other items. It's {@link OTS_Container::count() count() method} has been overwritten so it now doesn't return count of current item (if it would even be possible for containers) but amount of items within (not recursively).
  * </p>
- * 
+ *
  * @package POT
  * @version 0.1.3
  */
@@ -27,14 +27,14 @@ class OTS_Container extends OTS_Item implements IteratorAggregate
 {
 /**
  * Contained items.
- * 
+ *
  * @var array
  */
     private $items = array();
 
 /**
  * Adds item to container.
- * 
+ *
  * @param OTS_Item $item Item.
  */
     public function addItem(OTS_Item $item)
@@ -44,11 +44,11 @@ class OTS_Container extends OTS_Item implements IteratorAggregate
 
 /**
  * Removes given item from current container.
- * 
+ *
  * <p>
  * Passed item must be exacly instance of item which is stored in container, not it's copy. This method bases on PHP references.
  * </p>
- * 
+ *
  * @param OTS_Item $item Item.
  * @tutorial POT/Players.pkg#deleting
  */
@@ -66,14 +66,14 @@ class OTS_Container extends OTS_Item implements IteratorAggregate
 
 /**
  * Number of items inside container.
- * 
+ *
  * <p>
  * OTS_Container implementation of Countable interface differs from {@link OTS_Item OTS_Item} implemention. {@link OTS_Item::count() OTS_Item::count()} returns count of given item, OTS_Container::count() returns number of items inside container. If somehow it would be possible to make container items with more then 1 in one place, you can use {@link OTS_Item::getCount() OTS_Item::getCount()} and {@link OTS_Item::setCount() OTS_Item::setCount()} in code where you are not sure if working with regular item, or container.
  * </p>
- * 
+ *
  * @return int Number of items.
  */
-    public function count()
+    public function count(): int
     {
         return count($items);
     }
@@ -123,7 +123,7 @@ class OTS_Container extends OTS_Item implements IteratorAggregate
 
 /**
  * Returns iterator handle for loops.
- * 
+ *
  * @version 0.1.0
  * @since 0.1.0
  * @return ArrayIterator Items iterator.
@@ -135,7 +135,7 @@ class OTS_Container extends OTS_Item implements IteratorAggregate
 
 /**
  * Clones all contained items.
- * 
+ *
  * @version 0.1.3
  * @since 0.1.3
  */