Some phpstan fixes

app/code/core/Mage/Adminhtml/Block/Catalog/Product/Edit/Tab/Crosssell.php

@@ -42,7 +42,7 @@ public function __construct()
     }
 
     /**
-     * Retirve currently edited product model
+     * Retrieve currently edited product model
      *
      * @return Mage_Catalog_Model_Product
      */
@@ -54,7 +54,7 @@ protected function _getProduct()
     /**
      * Add filter
      *
-     * @param object $column
+     * @param Mage_Adminhtml_Block_Widget_Grid_Column $column
      * @return $this
      */
     protected function _addColumnFilterToCollection($column)

app/code/core/Mage/Adminhtml/Block/Catalog/Product/Edit/Tab/Related.php

@@ -42,7 +42,7 @@ public function __construct()
     }
 
     /**
-     * Retirve currently edited product model
+     * Retrieve currently edited product model
      *
      * @return Mage_Catalog_Model_Product
      */
@@ -54,7 +54,7 @@ protected function _getProduct()
     /**
      * Add filter
      *
-     * @param object $column
+     * @param Mage_Adminhtml_Block_Widget_Grid_Column $column
      * @return $this
      */
     protected function _addColumnFilterToCollection($column)

app/code/core/Mage/Adminhtml/Block/Catalog/Product/Edit/Tab/Upsell.php

@@ -42,7 +42,7 @@ public function __construct()
     }
 
     /**
-     * Retirve currently edited product model
+     * Retrieve currently edited product model
      *
      * @return Mage_Catalog_Model_Product
      */
@@ -54,7 +54,7 @@ protected function _getProduct()
     /**
      * Add filter
      *
-     * @param object $column
+     * @param Mage_Adminhtml_Block_Widget_Grid_Column $column
      * @return $this
      */
     protected function _addColumnFilterToCollection($column)

app/code/core/Mage/Adminhtml/Block/Checkout/Agreement/Edit/Form.php

@@ -93,7 +93,7 @@ protected function _prepareForm()
                 'required'  => true,
                 'values'    => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm(false, true),
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         } else {
             $fieldset->addField('store_id', 'hidden', [

app/code/core/Mage/Adminhtml/Block/Cms/Block/Edit/Form.php

@@ -87,7 +87,7 @@ protected function _prepareForm()
                 'required'  => true,
                 'values'    => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm(false, true),
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         } else {
             $fieldset->addField('store_id', 'hidden', [

app/code/core/Mage/Adminhtml/Block/Cms/Page/Edit/Tab/Main.php

@@ -80,7 +80,7 @@ protected function _prepareForm()
                 'values'    => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm(false, true),
                 'disabled'  => $isElementDisabled,
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         } else {
             $fieldset->addField('store_id', 'hidden', [

app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/Account.php

@@ -96,7 +96,7 @@ function(v, elem){
             );
             // @codingStandardsIgnoreEnd
         }
-        $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+        $renderer = $this->getStoreSwitcherRenderer();
         $form->getElement('website_id')->setRenderer($renderer);
 
         $customerStoreId = null;

app/code/core/Mage/Adminhtml/Block/Promo/Catalog/Edit/Tab/Main.php

@@ -127,7 +127,7 @@ protected function _prepareForm()
                 'required' => true,
                 'values'   => Mage::getSingleton('adminhtml/system_store')->getWebsiteValuesForForm()
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         }
 

app/code/core/Mage/Adminhtml/Block/Promo/Quote/Edit/Tab/Main.php

@@ -131,7 +131,7 @@ protected function _prepareForm()
                 'required' => true,
                 'values'   => Mage::getSingleton('adminhtml/system_store')->getWebsiteValuesForForm()
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         }
 

app/code/core/Mage/Adminhtml/Block/Rating/Edit/Tab/Form.php

@@ -98,7 +98,7 @@ protected function _prepareForm()
             'name' => 'stores[]',
             'values' => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm()
         ]);
-        $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+        $renderer = $this->getStoreSwitcherRenderer();
         $field->setRenderer($renderer);
 
         $fieldset->addField('position', 'text', [

app/code/core/Mage/Adminhtml/Block/Review/Add/Form.php

@@ -56,7 +56,7 @@ protected function _prepareForm()
                 'name'      => 'select_stores[]',
                 'values'    => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm(),
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         }
 

app/code/core/Mage/Adminhtml/Block/Review/Edit/Form.php

@@ -86,7 +86,7 @@ protected function _prepareForm()
                 'name'      => 'stores[]',
                 'values'    => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm(),
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
             $review->setSelectStores($review->getStores());
         } else {

app/code/core/Mage/Adminhtml/Block/Sitemap/Edit/Form.php

@@ -74,7 +74,7 @@ protected function _prepareForm()
                 'value'    => $model->getStoreId(),
                 'values'   => Mage::getSingleton('adminhtml/system_store')->getStoreValuesForForm(),
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         } else {
             $fieldset->addField('store_id', 'hidden', [

app/code/core/Mage/Adminhtml/Block/System/Design/Edit/Tab/General.php

@@ -33,7 +33,7 @@ protected function _prepareForm()
                 'name'     => 'store_id',
                 'required' => true,
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $field->setRenderer($renderer);
         } else {
             $fieldset->addField('store_id', 'hidden', [

app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php

@@ -145,7 +145,7 @@ protected function _prepareForm()
                 'disabled'  => true,
                 'value'     => $formValues['store_id'],
             ]);
-            $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+            $renderer = $this->getStoreSwitcherRenderer();
             $element->setRenderer($renderer);
             if ($noStoreError) {
                 $element->setAfterElementHtml($noStoreError);

app/code/core/Mage/Adminhtml/Block/Widget/Form.php

@@ -238,8 +238,16 @@ protected function _getAdditionalElementTypes()
      * @param Varien_Data_Form_Element_Abstract $element
      * @return string
      */
+    // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.FoundInExtendedClass
     protected function _getAdditionalElementHtml($element)
     {
         return '';
     }
+
+    protected function getStoreSwitcherRenderer(): Mage_Adminhtml_Block_Store_Switcher_Form_Renderer_Fieldset_Element
+    {
+        /** @var Mage_Adminhtml_Block_Store_Switcher_Form_Renderer_Fieldset_Element $renderer */
+        $renderer = $this->getLayout()->createBlock('adminhtml/store_switcher_form_renderer_fieldset_element');
+        return $renderer;
+    }
 }

app/code/core/Mage/Adminhtml/Block/Widget/Grid.php

@@ -45,7 +45,7 @@ class Mage_Adminhtml_Block_Widget_Grid extends Mage_Adminhtml_Block_Widget
     /**
      * Collection object
      *
-     * @var Mage_Core_Model_Resource_Db_Collection_Abstract|null
+     * @var Mage_Core_Model_Resource_Db_Collection_Abstract|Varien_Data_Collection_Db|null
      */
     protected $_collection = null;
 
@@ -306,7 +306,7 @@ public function getMainButtonsHtml()
     /**
      * set collection object
      *
-     * @param Mage_Core_Model_Resource_Db_Collection_Abstract $collection
+     * @param Mage_Core_Model_Resource_Db_Collection_Abstract|Varien_Data_Collection_Db $collection
      */
     public function setCollection($collection)
     {
@@ -316,7 +316,7 @@ public function setCollection($collection)
     /**
      * get collection object
      *
-     * @return Mage_Core_Model_Resource_Db_Collection_Abstract
+     * @return Mage_Core_Model_Resource_Db_Collection_Abstract|Varien_Data_Collection_Db
      */
     public function getCollection()
     {

app/code/core/Mage/Adminhtml/Model/Giftmessage/Save.php

@@ -256,6 +256,7 @@ public function importAllowQuoteItemsFromProducts($products)
         foreach ($products as $productId => $data) {
             $product = Mage::getModel('catalog/product')
                 ->setStore($this->_getSession()->getStore())
+                // phpcs:ignore Ecg.Performance.Loop.ModelLSD
                 ->load($productId);
             $item = $this->_getQuote()->getItemByProduct($product);
 

app/code/core/Mage/Bundle/Block/Catalog/Product/View/Type/Bundle/Option.php

@@ -236,8 +236,8 @@ public function getSelectionTitlePrice($_selection, $includeContainer = true)
     /**
      * Set JS validation container for element
      *
-     * @param int $elementId
-     * @param int $containerId
+     * @param string $elementId
+     * @param string $containerId
      * @return string
      */
     public function setValidationContainer($elementId, $containerId)

app/code/core/Mage/Catalog/Model/Product.php

@@ -530,7 +530,7 @@ public function getLinkInstance()
      * Retrieve product id by sku
      *
      * @param   string $sku
-     * @return  int
+     * @return  string
      */
     public function getIdBySku($sku)
     {

app/code/core/Mage/Catalog/Model/Product/Option.php

@@ -169,7 +169,7 @@ public function addValue(Mage_Catalog_Model_Product_Option_Value $value)
     /**
      * Get value by given id
      *
-     * @param int $valueId
+     * @param int|string $valueId
      * @return Mage_Catalog_Model_Product_Option_Value
      */
     public function getValueById($valueId)

app/code/core/Mage/Catalog/Model/Product/Option/Value.php

@@ -49,7 +49,7 @@ protected function _construct()
     }
 
     /**
-     * @param string $value
+     * @param array $value
      * @return $this
      */
     public function addValue($value)

app/code/core/Mage/Catalog/Model/Resource/Abstract.php

@@ -203,7 +203,7 @@ protected function _setAttributeValue($object, $valueRow)
     /**
      * Insert or Update attribute data
      *
-     * @param Mage_Catalog_Model_Abstract $object
+     * @param Mage_Catalog_Model_Abstract|Varien_Object $object
      * @param Mage_Eav_Model_Entity_Attribute_Abstract|Mage_Catalog_Model_Resource_Eav_Attribute $attribute
      * @param mixed $value
      * @return Mage_Catalog_Model_Resource_Abstract

app/code/core/Mage/Catalog/Model/Resource/Category.php

@@ -376,10 +376,10 @@ public function getProductsPosition($category)
     }
 
     /**
-     * Get chlden categories count
+     * Get children categories count
      *
      * @param int $categoryId
-     * @return int
+     * @return string
      */
     public function getChildrenCount($categoryId)
     {
@@ -395,7 +395,7 @@ public function getChildrenCount($categoryId)
      * Check if category id exist
      *
      * @param int $entityId
-     * @return bool
+     * @return string
      */
     public function checkId($entityId)
     {
@@ -430,7 +430,7 @@ public function verifyIds(array $ids)
      *
      * @param Mage_Catalog_Model_Category $category
      * @param bool $isActiveFlag
-     * @return int
+     * @return string
      */
     public function getChildrenAmount($category, $isActiveFlag = true)
     {
@@ -458,6 +458,7 @@ public function getChildrenAmount($category, $isActiveFlag = true)
                 'c.attribute_id = :attribute_id AND c.store_id = :store_id AND c.entity_id = m.entity_id',
                 []
             )
+            // phpcs:ignore Ecg.Sql.SlowQuery.SlowRawSql
             ->where('m.path LIKE :c_path')
             ->where($checkSql . ' = :active_flag');
 
@@ -597,6 +598,7 @@ public function getParentDesignCategory($category)
             ->addFieldToFilter('level', ['neq' => 0])
             ->setOrder('level', 'DESC')
             ->load();
+        // phpcs:ignore Ecg.Performance.GetFirstItem.Found
         return $collection->getFirstItem();
     }
 
@@ -793,7 +795,7 @@ public function changeParent(
         Mage_Catalog_Model_Category $newParent,
         $afterCategoryId = null
     ) {
-        $childrenCount  = $this->getChildrenCount($category->getId()) + 1;
+        $childrenCount  = (int)$this->getChildrenCount($category->getId()) + 1;
         $table          = $this->getEntityTable();
         $adapter        = $this->_getWriteAdapter();
         $levelFiled     = $adapter->quoteIdentifier('level');
@@ -909,7 +911,7 @@ protected function _processPositions($category, $newParent, $afterCategoryId)
                 ->where('parent_id = :parent_id');
             $position = $adapter->fetchOne($select, ['parent_id' => $newParent->getId()]);
         }
-        $position += 1;
+        ++$position;
 
         return $position;
     }