diff --git a/app/code/core/Mage/Adminhtml/Model/Config/Data.php b/app/code/core/Mage/Adminhtml/Model/Config/Data.php
index add8890fd4c..9df3c531950 100644
--- a/app/code/core/Mage/Adminhtml/Model/Config/Data.php
+++ b/app/code/core/Mage/Adminhtml/Model/Config/Data.php
@@ -357,6 +357,7 @@ protected function _getPathConfig($path, $full = true)
      * @param string $path
      * @param null|bool $inherit
      * @param null|array $configData
+     * @param-out bool $inherit
      * @return Varien_Simplexml_Element
      */
     public function getConfigDataValue($path, &$inherit = null, $configData = null)
diff --git a/app/code/core/Mage/Api/Helper/Data.php b/app/code/core/Mage/Api/Helper/Data.php
index c216a164058..4616a2e6e1e 100644
--- a/app/code/core/Mage/Api/Helper/Data.php
+++ b/app/code/core/Mage/Api/Helper/Data.php
@@ -223,7 +223,8 @@ public function packArrayToObject(array $arr)
     /**
      * Convert objects and arrays to array recursively
      *
-     * @param  array|object $data
+     * @param array|object $data
+     * @param-out array $data
      */
     public function toArray(&$data)
     {
@@ -323,6 +324,7 @@ protected function _parseComplexFilter($complexFilter)
      *
      * @param string $conditionOperator
      * @param string $conditionValue
+     * @param-out string|array $conditionValue
      */
     public function formatFilterConditionValue($conditionOperator, &$conditionValue)
     {
diff --git a/app/code/core/Mage/Api/Model/Server/Handler/Abstract.php b/app/code/core/Mage/Api/Model/Server/Handler/Abstract.php
index 5ad0ad18ad8..0c778fd5066 100644
--- a/app/code/core/Mage/Api/Model/Server/Handler/Abstract.php
+++ b/app/code/core/Mage/Api/Model/Server/Handler/Abstract.php
@@ -270,11 +270,14 @@ public function call($sessionId, $apiPath, $args = [])
         }
 
         $methodInfo = $resources->$resourceName->methods->$methodName;
+        $method = (isset($methodInfo->method) ? (string) $methodInfo->method : $methodName);
 
-        try {
-            $method = (isset($methodInfo->method) ? (string) $methodInfo->method : $methodName);
+        if (!isset($resources->$resourceName->model)) {
+            throw new Mage_Api_Exception('resource_path_not_callable');
+        }
 
-            $modelName = $this->_prepareResourceModelName((string) $resources->$resourceName->model);
+        try {
+            $modelName = $this->_prepareResourceModelName((string)$resources->$resourceName->model);
             try {
                 $model = Mage::getModel($modelName);
                 if ($model instanceof Mage_Api_Model_Resource_Abstract) {
@@ -391,11 +394,15 @@ public function multiCall($sessionId, array $calls = [], $options = [])
             }
 
             $methodInfo = $resources->$resourceName->methods->$methodName;
+            $method = (isset($methodInfo->method) ? (string) $methodInfo->method : $methodName);
 
-            try {
-                $method = (isset($methodInfo->method) ? (string) $methodInfo->method : $methodName);
+            if (!isset($resources->$resourceName->model)) {
+                throw new Mage_Api_Exception('resource_path_not_callable');
+            }
 
+            try {
                 $modelName = $this->_prepareResourceModelName((string) $resources->$resourceName->model);
+
                 try {
                     $model = Mage::getModel($modelName);
                 } catch (Exception $e) {
diff --git a/app/code/core/Mage/Catalog/Model/Product/Attribute/Tierprice/Api/V2.php b/app/code/core/Mage/Catalog/Model/Product/Attribute/Tierprice/Api/V2.php
index fece8550ae6..2a2995f27c7 100644
--- a/app/code/core/Mage/Catalog/Model/Product/Attribute/Tierprice/Api/V2.php
+++ b/app/code/core/Mage/Catalog/Model/Product/Attribute/Tierprice/Api/V2.php
@@ -45,7 +45,7 @@ public function prepareTierPrices($product, $tierPrices = null)
             }
 
             if (!isset($tierPrice->website) || $tierPrice->website == 'all') {
-                $tierPrice->website = 0;
+                $tierPrice->website = 0; // @phpstan-ignore-line
             } else {
                 try {
                     $tierPrice->website = Mage::app()->getWebsite($tierPrice->website)->getId();
@@ -59,7 +59,7 @@ public function prepareTierPrices($product, $tierPrices = null)
             }
 
             if (!isset($tierPrice->customer_group_id)) {
-                $tierPrice->customer_group_id = 'all';
+                $tierPrice->customer_group_id = 'all'; // @phpstan-ignore-line
             }
 
             if ($tierPrice->customer_group_id == 'all') {
diff --git a/app/code/core/Mage/CatalogSearch/Block/Term.php b/app/code/core/Mage/CatalogSearch/Block/Term.php
index 9606a6cf0ea..10503bc18ab 100644
--- a/app/code/core/Mage/CatalogSearch/Block/Term.php
+++ b/app/code/core/Mage/CatalogSearch/Block/Term.php
@@ -60,10 +60,12 @@ protected function _loadTerms()
                 $temp[$term->getName()] = $term;
                 $termKeys[] = $term->getName();
             }
-            natcasesort($termKeys);
 
-            foreach ($termKeys as $termKey) {
-                $this->_terms[$termKey] = $temp[$termKey];
+            if (isset($termKeys)) {
+                natcasesort($termKeys);
+                foreach ($termKeys as $termKey) {
+                    $this->_terms[$termKey] = $temp[$termKey];
+                }
             }
         }
         return $this;
diff --git a/app/code/core/Mage/Core/Model/Input/Filter.php b/app/code/core/Mage/Core/Model/Input/Filter.php
index afcdbe395d3..0fa3e22411b 100644
--- a/app/code/core/Mage/Core/Model/Input/Filter.php
+++ b/app/code/core/Mage/Core/Model/Input/Filter.php
@@ -204,6 +204,7 @@ public function filter($data)
      * @param array $data
      * @param array|null $filters
      * @param bool $isFilterListSimple
+     * @param-out array $filters
      * @return array
      * @throws Exception    Exception when filter is not found or not instance of defined instances
      */
diff --git a/app/code/core/Mage/Core/Model/Translate/Inline.php b/app/code/core/Mage/Core/Model/Translate/Inline.php
index cc9202d18fa..c1c080239f7 100644
--- a/app/code/core/Mage/Core/Model/Translate/Inline.php
+++ b/app/code/core/Mage/Core/Model/Translate/Inline.php
@@ -182,6 +182,7 @@ public function processAjaxPost($translate)
      * Strip inline translations from text
      *
      * @param array|string $body
+     * @param-out array|string|null $body
      * @return $this
      */
     public function stripInlineTranslations(&$body)
@@ -200,6 +201,7 @@ public function stripInlineTranslations(&$body)
      * Replace translate templates to HTML fragments
      *
      * @param array|string $body
+     * @param-out array|string|null $body
      * @return $this
      */
     public function processResponseBody(&$body)
diff --git a/app/code/core/Mage/Downloadable/Model/Link/Api/V2.php b/app/code/core/Mage/Downloadable/Model/Link/Api/V2.php
index 5781ecdbe0d..dde76835853 100644
--- a/app/code/core/Mage/Downloadable/Model/Link/Api/V2.php
+++ b/app/code/core/Mage/Downloadable/Model/Link/Api/V2.php
@@ -25,6 +25,7 @@ class Mage_Downloadable_Model_Link_Api_V2 extends Mage_Downloadable_Model_Link_A
      * Clean the object, leave only property values
      *
      * @param object $var
+     * @param-out array $var
      */
     protected function _prepareData(&$var)
     {
diff --git a/app/code/core/Mage/Downloadable/Model/Link/Api/Validator.php b/app/code/core/Mage/Downloadable/Model/Link/Api/Validator.php
index 09df3fd53a8..9e7cfae71bd 100644
--- a/app/code/core/Mage/Downloadable/Model/Link/Api/Validator.php
+++ b/app/code/core/Mage/Downloadable/Model/Link/Api/Validator.php
@@ -208,6 +208,7 @@ public function validateNumOfDownloads(&$var)
      * Validate variable, in case of fault loads default entity.
      *
      * @param int|bool $var
+     * @param-out int $var
      */
     public function validateUnlimited(&$var)
     {
diff --git a/app/code/core/Mage/Paypal/Model/Api/Standard.php b/app/code/core/Mage/Paypal/Model/Api/Standard.php
index ea5a0dd5429..a557e757e0d 100644
--- a/app/code/core/Mage/Paypal/Model/Api/Standard.php
+++ b/app/code/core/Mage/Paypal/Model/Api/Standard.php
@@ -196,7 +196,7 @@ protected function _exportLineItems(array &$request, $i = 1)
     /**
      * Import address object, if set, to the request
      *
-     * @param array $request
+     * @param array|Varien_Object $request
      */
     protected function _importAddress(&$request)
     {
diff --git a/app/code/core/Mage/Sales/Model/Order/Payment/Transaction.php b/app/code/core/Mage/Sales/Model/Order/Payment/Transaction.php
index 6aab8828d3c..7457514faea 100644
--- a/app/code/core/Mage/Sales/Model/Order/Payment/Transaction.php
+++ b/app/code/core/Mage/Sales/Model/Order/Payment/Transaction.php
@@ -675,13 +675,11 @@ protected function _loadChildren()
                 $child->setOrderPaymentObject($payment);
             }
             $this->_children[$child->getId()] = $child;
-            if ($this->_identifiedChildren !== false) {
-                $childTxnId = $child->getTxnId();
-                if (!$childTxnId || $childTxnId == '0') {
-                    $this->_identifiedChildren = false;
-                } else {
-                    $this->_identifiedChildren[$child->getTxnId()] = $child;
-                }
+            $childTxnId = $child->getTxnId();
+            if (!$childTxnId || $childTxnId == '0') {
+                $this->_identifiedChildren = false;
+            } else {
+                $this->_identifiedChildren[$child->getTxnId()] = $child;
             }
         }
         if ($this->_identifiedChildren === false) {
diff --git a/composer.lock b/composer.lock
index a4d6ca0664e..1b12545d35f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -3227,16 +3227,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.10.59",
+            "version": "1.10.66",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "e607609388d3a6d418a50a49f7940e8086798281"
+                "reference": "94779c987e4ebd620025d9e5fdd23323903950bd"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/e607609388d3a6d418a50a49f7940e8086798281",
-                "reference": "e607609388d3a6d418a50a49f7940e8086798281",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/94779c987e4ebd620025d9e5fdd23323903950bd",
+                "reference": "94779c987e4ebd620025d9e5fdd23323903950bd",
                 "shasum": ""
             },
             "require": {
@@ -3285,7 +3285,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-02-20T13:59:13+00:00"
+            "time": "2024-03-28T16:17:31+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
diff --git a/lib/Varien/Db/Adapter/Pdo/Mysql.php b/lib/Varien/Db/Adapter/Pdo/Mysql.php
index 17f3637ebb5..c169ae603a2 100644
--- a/lib/Varien/Db/Adapter/Pdo/Mysql.php
+++ b/lib/Varien/Db/Adapter/Pdo/Mysql.php
@@ -511,6 +511,7 @@ public function query($sql, $bind = [])
      * with named binds.
      *
      * @param Zend_Db_Select|string $sql
+     * @param-out string $sql
      * @param mixed $bind
      * @return $this
      */
diff --git a/phpstan.dist.baseline.neon b/phpstan.dist.baseline.neon
index ca92edf5f60..e24f6f3f8b7 100644
--- a/phpstan.dist.baseline.neon
+++ b/phpstan.dist.baseline.neon
@@ -740,11 +740,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/Api/Model/Server/Adapter/Soap.php
 
-		-
-			message: "#^Access to an undefined property object\\:\\:\\$model\\.$#"
-			count: 2
-			path: app/code/core/Mage/Api/Model/Server/Handler/Abstract.php
-
 		-
 			message: "#^Result of method SoapServer\\:\\:handle\\(\\) \\(void\\) is used\\.$#"
 			count: 1
@@ -1560,16 +1555,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/Catalog/Model/Product/Attribute/Media/Api/V2.php
 
-		-
-			message: "#^Access to an undefined property object\\:\\:\\$customer_group_id\\.$#"
-			count: 1
-			path: app/code/core/Mage/Catalog/Model/Product/Attribute/Tierprice/Api/V2.php
-
-		-
-			message: "#^Access to an undefined property object\\:\\:\\$website\\.$#"
-			count: 1
-			path: app/code/core/Mage/Catalog/Model/Product/Attribute/Tierprice/Api/V2.php
-
 		-
 			message: "#^Method Mage_Catalog_Model_Resource_Product_Compare_Item\\:\\:clean\\(\\) invoked with 1 parameter, 0 required\\.$#"
 			count: 1
@@ -2035,11 +2020,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/CatalogSearch/Block/Term.php
 
-		-
-			message: "#^Variable \\$termKeys might not be defined\\.$#"
-			count: 2
-			path: app/code/core/Mage/CatalogSearch/Block/Term.php
-
 		-
 			message: "#^Property Mage_CatalogSearch_Helper_Data\\:\\:\\$_queryText \\(string\\) in isset\\(\\) is not nullable\\.$#"
 			count: 1