diff --git a/app/code/Magento/Analytics/Model/Cryptographer.php b/app/code/Magento/Analytics/Model/Cryptographer.php
index efddcb501aabb..d6fe613e6d096 100644
--- a/app/code/Magento/Analytics/Model/Cryptographer.php
+++ b/app/code/Magento/Analytics/Model/Cryptographer.php
@@ -135,6 +135,6 @@ private function validateCipherMethod($cipherMethod)
         );
         $cipherMethod = strtolower($cipherMethod);
 
-        return (false !== array_search($cipherMethod, $methods));
+        return in_array($cipherMethod, $methods);
     }
 }
diff --git a/app/code/Magento/Backend/Model/Menu/Item/Validator.php b/app/code/Magento/Backend/Model/Menu/Item/Validator.php
index 7b72b355f551d..8da155a63427f 100644
--- a/app/code/Magento/Backend/Model/Menu/Item/Validator.php
+++ b/app/code/Magento/Backend/Model/Menu/Item/Validator.php
@@ -122,7 +122,7 @@ private function assertContainsRequiredParameters($data)
      */
     private function assertIdentifierIsNotUsed($id)
     {
-        if (array_search($id, $this->_ids) !== false) {
+        if (in_array($id, $this->_ids)) {
             throw new \InvalidArgumentException('Item with id ' . $id . ' already exists');
         }
     }
diff --git a/app/code/Magento/Cms/Model/ResourceModel/Block.php b/app/code/Magento/Cms/Model/ResourceModel/Block.php
index 30e817713755c..49fe1be0fd2e8 100644
--- a/app/code/Magento/Cms/Model/ResourceModel/Block.php
+++ b/app/code/Magento/Cms/Model/ResourceModel/Block.php
@@ -187,7 +187,7 @@ public function getIsUniqueBlockToStores(AbstractModel $object)
 
         $stores = (array)$object->getData('store_id');
         $isDefaultStore = $this->_storeManager->isSingleStoreMode()
-            || array_search(Store::DEFAULT_STORE_ID, $stores) !== false;
+            || in_array(Store::DEFAULT_STORE_ID, $stores);
 
         if (!$isDefaultStore) {
             $stores[] = Store::DEFAULT_STORE_ID;
diff --git a/app/code/Magento/Indexer/Console/Command/IndexerReindexCommand.php b/app/code/Magento/Indexer/Console/Command/IndexerReindexCommand.php
index fffa4503e14a7..dcfbb2df2361b 100644
--- a/app/code/Magento/Indexer/Console/Command/IndexerReindexCommand.php
+++ b/app/code/Magento/Indexer/Console/Command/IndexerReindexCommand.php
@@ -182,7 +182,7 @@ private function getDependentIndexerIds(string $indexerId)
         $dependentIndexerIds = [];
         foreach (array_keys($this->getConfig()->getIndexers()) as $id) {
             $dependencies = $this->getDependencyInfoProvider()->getIndexerIdsToRunBefore($id);
-            if (array_search($indexerId, $dependencies) !== false) {
+            if (in_array($indexerId, $dependencies)) {
                 $dependentIndexerIds = array_merge(
                     $dependentIndexerIds,
                     [$id],
diff --git a/dev/tests/functional/tests/app/Magento/CatalogSearch/Test/Constraint/AssertSearchAttributeTest.php b/dev/tests/functional/tests/app/Magento/CatalogSearch/Test/Constraint/AssertSearchAttributeTest.php
index b2a49a5543015..f7226baf41327 100644
--- a/dev/tests/functional/tests/app/Magento/CatalogSearch/Test/Constraint/AssertSearchAttributeTest.php
+++ b/dev/tests/functional/tests/app/Magento/CatalogSearch/Test/Constraint/AssertSearchAttributeTest.php
@@ -29,7 +29,7 @@ public function processAssert(
         $availableAttributes = $advancedSearch->getForm()->getFormLabels();
         if (isset($attributeForSearch['isVisible'])) {
             \PHPUnit\Framework\Assert::assertTrue(
-                (false !== array_search($attributeForSearch['name'], $availableAttributes)),
+                (in_array($attributeForSearch['name'], $availableAttributes)),
                 'Attribute ' . $attributeForSearch['name'] . 'was not found in Advanced Search Page.'
             );
         } else {
diff --git a/dev/tests/static/framework/Magento/TestFramework/Dependency/Route/RouteMapper.php b/dev/tests/static/framework/Magento/TestFramework/Dependency/Route/RouteMapper.php
index 315bb2ae26b02..f650b95d97baf 100644
--- a/dev/tests/static/framework/Magento/TestFramework/Dependency/Route/RouteMapper.php
+++ b/dev/tests/static/framework/Magento/TestFramework/Dependency/Route/RouteMapper.php
@@ -306,7 +306,7 @@ private function getModuleActionsMapping(string $module, string $routerId, array
     {
         $subdirectoryPattern = str_replace('\\', DIRECTORY_SEPARATOR, $module);
         $subdirectoryPattern .= DIRECTORY_SEPARATOR . 'Controller/';
-        if (array_search($routerId, [Area::AREA_ADMINHTML, Area::AREA_ADMIN], true) !== false) {
+        if (in_array($routerId, [Area::AREA_ADMINHTML, Area::AREA_ADMIN], true)) {
             $subdirectoryPattern .= ucfirst(Area::AREA_ADMINHTML) . DIRECTORY_SEPARATOR;
         } else {
             $subdirectoryPattern .= '(?!' . ucfirst(Area::AREA_ADMINHTML) . ')';
diff --git a/dev/tests/static/testsuite/Magento/Test/Integrity/Dependency/DeclarativeSchemaDependencyProvider.php b/dev/tests/static/testsuite/Magento/Test/Integrity/Dependency/DeclarativeSchemaDependencyProvider.php
index 965bc6184144b..796437eb26308 100644
--- a/dev/tests/static/testsuite/Magento/Test/Integrity/Dependency/DeclarativeSchemaDependencyProvider.php
+++ b/dev/tests/static/testsuite/Magento/Test/Integrity/Dependency/DeclarativeSchemaDependencyProvider.php
@@ -194,7 +194,7 @@ private function filterSelfDependency(string $moduleName, array $dependencies):a
             $decodedId = $this->decodeDependencyId($id);
             $entityType = $decodedId['entityType'];
             if ($entityType === self::SCHEMA_ENTITY_TABLE || $entityType === "column") {
-                if (array_search($moduleName, $modules) !== false) {
+                if (in_array($moduleName, $modules)) {
                     unset($dependencies[$id]);
                 }
             } else {
diff --git a/lib/internal/Magento/Framework/Data/Structure.php b/lib/internal/Magento/Framework/Data/Structure.php
index b22395f1ba835..ae0061c0fc350 100644
--- a/lib/internal/Magento/Framework/Data/Structure.php
+++ b/lib/internal/Magento/Framework/Data/Structure.php
@@ -621,7 +621,7 @@ protected function _insertChild($targetParentId, $elementId, $offset, $alias)
                 )
             );
         }
-        if (false !== array_search($alias, $children)) {
+        if (in_array($alias, $children)) {
             throw new LocalizedException(
                 new \Magento\Framework\Phrase(
                     'The element "%1" can\'t have a child because "%1" already has a child with alias "%2".',
diff --git a/lib/internal/Magento/Framework/Indexer/Config/DependencyInfoProvider.php b/lib/internal/Magento/Framework/Indexer/Config/DependencyInfoProvider.php
index 661f9f9c0ff80..b6294cceadcee 100644
--- a/lib/internal/Magento/Framework/Indexer/Config/DependencyInfoProvider.php
+++ b/lib/internal/Magento/Framework/Indexer/Config/DependencyInfoProvider.php
@@ -46,7 +46,7 @@ public function getIndexerIdsToRunAfter(string $indexerId): array
         $this->getIndexerDataWithValidation($indexerId);
         $result = [];
         foreach ($this->config->getIndexers() as $id => $indexerData) {
-            if (array_search($indexerId, $indexerData['dependencies']) !== false) {
+            if (in_array($indexerId, $indexerData['dependencies'])) {
                 $result[] = $id;
             }
         }