diff --git a/bin/rector.php b/bin/rector.php
index 0ce45cf7999..027eb6acdf5 100755
--- a/bin/rector.php
+++ b/bin/rector.php
@@ -29,54 +29,12 @@ define('__RECTOR_RUNNING__', true);
 $autoloadIncluder = new AutoloadIncluder();
 $autoloadIncluder->includeDependencyOrRepositoryVendorAutoloadIfExists();
 
-
-if (file_exists(__DIR__ . '/../preload.php') && is_dir(__DIR__ . '/../vendor')) {
-    require_once __DIR__ . '/../preload.php';
-}
-
-require_once __DIR__ . '/../src/constants.php';
-
-$autoloadIncluder->loadIfExistsAndNotLoadedYet(__DIR__ . '/../vendor/scoper-autoload.php');
-$autoloadIncluder->autoloadProjectAutoloaderFile();
-$autoloadIncluder->autoloadRectorInstalledAsGlobalDependency();
-$autoloadIncluder->autoloadFromCommandLine();
-
-$rectorConfigsResolver = new RectorConfigsResolver();
-
-try {
-    $bootstrapConfigs = $rectorConfigsResolver->provide();
-    $rectorContainerFactory = new RectorContainerFactory();
-    $container = $rectorContainerFactory->createFromBootstrapConfigs($bootstrapConfigs);
-} catch (Throwable $throwable) {
-    // for json output
-    $argvInput = new ArgvInput();
-    $outputFormat = $argvInput->getParameterOption('--' . Option::OUTPUT_FORMAT);
-
-    // report fatal error in json format
-    if ($outputFormat === JsonOutputFormatter::NAME) {
-        echo Json::encode([
-            'fatal_errors' => [$throwable->getMessage()],
-        ]);
-    } else {
-        // report fatal errors in console format
-        $rectorConsoleOutputStyleFactory = new RectorConsoleOutputStyleFactory(new PrivatesCaller());
-        $rectorConsoleOutputStyle = $rectorConsoleOutputStyleFactory->create();
-        $rectorConsoleOutputStyle->error($throwable->getMessage());
-    }
-
-    exit(Command::FAILURE);
-}
-
-/** @var ConsoleApplication $application */
-$application = $container->get(ConsoleApplication::class);
-exit($application->run());
-
 final class AutoloadIncluder
 {
     /**
      * @var string[]
      */
-    private $alreadyLoadedAutoloadFiles = [];
+    private array $alreadyLoadedAutoloadFiles = [];
 
     public function includeDependencyOrRepositoryVendorAutoloadIfExists(): void
     {
@@ -118,8 +76,14 @@ final class AutoloadIncluder
     {
         $cliArgs = $_SERVER['argv'];
 
-        $autoloadOptionPosition = array_search('-a', $cliArgs, true) ?: array_search('--autoload-file', $cliArgs, true);
-        if (! $autoloadOptionPosition) {
+        $aOptionPosition = array_search('-a', $cliArgs, true);
+        $autoloadFileOptionPosition = array_search('--autoload-file', $cliArgs, true);
+
+        if (is_int($aOptionPosition)) {
+            $autoloadOptionPosition = $aOptionPosition;
+        } elseif (is_int($autoloadFileOptionPosition)) {
+            $autoloadOptionPosition = $autoloadFileOptionPosition;
+        } else {
             return;
         }
 
@@ -142,8 +106,54 @@ final class AutoloadIncluder
             return;
         }
 
-        $this->alreadyLoadedAutoloadFiles[] = realpath($filePath);
+        $realPath = realpath($filePath);
+        if (! is_string($realPath)) {
+            return;
+        }
+
+        $this->alreadyLoadedAutoloadFiles[] = $realPath;
 
         require_once $filePath;
     }
 }
+
+if (file_exists(__DIR__ . '/../preload.php') && is_dir(__DIR__ . '/../vendor')) {
+    require_once __DIR__ . '/../preload.php';
+}
+
+require_once __DIR__ . '/../src/constants.php';
+
+$autoloadIncluder->loadIfExistsAndNotLoadedYet(__DIR__ . '/../vendor/scoper-autoload.php');
+$autoloadIncluder->autoloadProjectAutoloaderFile();
+$autoloadIncluder->autoloadRectorInstalledAsGlobalDependency();
+$autoloadIncluder->autoloadFromCommandLine();
+
+$rectorConfigsResolver = new RectorConfigsResolver();
+
+try {
+    $bootstrapConfigs = $rectorConfigsResolver->provide();
+    $rectorContainerFactory = new RectorContainerFactory();
+    $container = $rectorContainerFactory->createFromBootstrapConfigs($bootstrapConfigs);
+} catch (Throwable $throwable) {
+    // for json output
+    $argvInput = new ArgvInput();
+    $outputFormat = $argvInput->getParameterOption('--' . Option::OUTPUT_FORMAT);
+
+    // report fatal error in json format
+    if ($outputFormat === JsonOutputFormatter::NAME) {
+        echo Json::encode([
+            'fatal_errors' => [$throwable->getMessage()],
+        ]);
+    } else {
+        // report fatal errors in console format
+        $rectorConsoleOutputStyleFactory = new RectorConsoleOutputStyleFactory(new PrivatesCaller());
+        $rectorConsoleOutputStyle = $rectorConsoleOutputStyleFactory->create();
+        $rectorConsoleOutputStyle->error($throwable->getMessage());
+    }
+
+    exit(Command::FAILURE);
+}
+
+/** @var ConsoleApplication $application */
+$application = $container->get(ConsoleApplication::class);
+exit($application->run());
diff --git a/phpstan.neon b/phpstan.neon
index 5b08520bd98..add986e6a80 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -670,3 +670,12 @@ parameters:
             path: packages/FileFormatter/ValueObject/Indent.php
 
         - '#Parameter \#1 \$indentStyle of method Rector\\FileFormatter\\ValueObjectFactory\\EditorConfigConfigurationBuilder\:\:withIndentStyle\(\) expects (.*?), string given#'
+
+        # autoload check in bin file
+        -
+            message: '#Function "class_exists\(\)" cannot be used/left in the code\: use ReflectionProvider\->has\*\(\) instead#'
+            path: bin/rector.php
+
+        -
+            message: '#Do not compare call directly, use a variable assign#'
+            path: bin/rector.php