Merge pull request #19 from Schleuse/fix-deprecation-messages-on-php-81

Fix deprecations messages due to type changes on PHP 8.1 & PHP 8.2

Author: fzieris

src/StringTemplate/NestedKeyArray.php

@@ -28,15 +28,15 @@ public function __construct(array &$array, $keySeparator = '.')
     /**
      * {@inheritdoc}
      */
-    public function getIterator()
+    public function getIterator(): \Traversable
     {
         return new NestedKeyIterator(new RecursiveArrayOnlyIterator($this->array));
     }
 
     /**
      * {@inheritdoc}
      */
-    public function offsetExists($offset)
+    public function offsetExists($offset): bool
     {
         $keys = explode($this->keySeparator, $offset);
         $ary = &$this->array;
@@ -53,6 +53,7 @@ public function offsetExists($offset)
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         $keys = explode($this->keySeparator, $offset);
@@ -68,15 +69,15 @@ public function offsetGet($offset)
     /**
      * {@inheritdoc}
      */
-    public function offsetSet($offset, $value)
+    public function offsetSet($offset, $value): void
     {
         $this->setNestedOffset($this->array, explode($this->keySeparator, $offset), $value);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function offsetUnset($offset)
+    public function offsetUnset($offset): void
     {
         $this->unsetNestedOffset($this->array, explode($this->keySeparator, $offset));
     }

src/StringTemplate/NestedKeyIterator.php

@@ -57,7 +57,7 @@ public function __construct(\Traversable $iterator, $separator = '.', $mode = \R
     /**
      * {@inheritdoc}
      */
-    public function callGetChildren()
+    public function callGetChildren(): ?\RecursiveIterator
     {
         $this->stack[] = parent::key();
         return parent::callGetChildren();
@@ -66,7 +66,7 @@ public function callGetChildren()
     /**
      * {@inheritdoc}
      */
-    public function endChildren()
+    public function endChildren(): void
     {
         parent::endChildren();
         array_pop($this->stack);
@@ -75,11 +75,12 @@ public function endChildren()
     /**
      * {@inheritdoc}
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         $keys = $this->stack;
         $keys[] = parent::key();
 
         return implode($this->keySeparator, $keys);
     }
-} 
+}

src/StringTemplate/RecursiveArrayOnlyIterator.php

@@ -22,7 +22,7 @@ class RecursiveArrayOnlyIterator extends \RecursiveArrayIterator
     /**
      * {@inheritdoc}
      */
-    public function hasChildren()
+    public function hasChildren(): bool
     {
         return is_array($this->current()) || $this->current() instanceof \Traversable;
     }