diff --git a/composer.lock b/composer.lock
index 6c6c67a8c..5850e2813 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1825,16 +1825,16 @@
     "packages-dev": [
         {
             "name": "phpstan/phpstan",
-            "version": "1.6.8",
+            "version": "1.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "d76498c5531232cb8386ceb6004f7e013138d3ba"
+                "reference": "e3baed2ee2ef322e0f9b8fe8f87fdbe024c7c719"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/d76498c5531232cb8386ceb6004f7e013138d3ba",
-                "reference": "d76498c5531232cb8386ceb6004f7e013138d3ba",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/e3baed2ee2ef322e0f9b8fe8f87fdbe024c7c719",
+                "reference": "e3baed2ee2ef322e0f9b8fe8f87fdbe024c7c719",
                 "shasum": ""
             },
             "require": {
@@ -1860,7 +1860,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.6.8"
+                "source": "https://github.com/phpstan/phpstan/tree/1.7.1"
             },
             "funding": [
                 {
@@ -1880,7 +1880,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-05-10T06:54:21+00:00"
+            "time": "2022-05-24T09:05:09+00:00"
         },
         {
             "name": "phpstan/phpstan-deprecation-rules",
diff --git a/src/Composer/Console/Application.php b/src/Composer/Console/Application.php
index ba140a149..dac353a94 100644
--- a/src/Composer/Console/Application.php
+++ b/src/Composer/Console/Application.php
@@ -135,7 +135,8 @@ class Application extends BaseApplication
         $this->disablePluginsByDefault = $input->hasParameterOption('--no-plugins');
         $this->disableScriptsByDefault = $input->hasParameterOption('--no-scripts');
 
-        if (Platform::getEnv('COMPOSER_NO_INTERACTION') || !Platform::isTty(defined('STDIN') ? STDIN : fopen('php://stdin', 'r'))) {
+        $stdin = defined('STDIN') ? STDIN : fopen('php://stdin', 'r');
+        if (Platform::getEnv('COMPOSER_NO_INTERACTION') || $stdin === false || !Platform::isTty($stdin)) {
             $input->setInteractive(false);
         }
 
diff --git a/src/Composer/DependencyResolver/RuleSetIterator.php b/src/Composer/DependencyResolver/RuleSetIterator.php
index 3d30c5d7e..2bf67f55b 100644
--- a/src/Composer/DependencyResolver/RuleSetIterator.php
+++ b/src/Composer/DependencyResolver/RuleSetIterator.php
@@ -75,7 +75,7 @@ class RuleSetIterator implements \Iterator
                 }
 
                 $this->currentType = $this->types[$this->currentTypeOffset];
-            } while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
+            } while (0 === \count($this->rules[$this->currentType]));
         }
     }
 
@@ -95,7 +95,7 @@ class RuleSetIterator implements \Iterator
             }
 
             $this->currentType = $this->types[$this->currentTypeOffset];
-        } while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
+        } while (0 === \count($this->rules[$this->currentType]));
     }
 
     public function valid(): bool
diff --git a/src/Composer/Package/BasePackage.php b/src/Composer/Package/BasePackage.php
index b815aec53..df9b3ce29 100644
--- a/src/Composer/Package/BasePackage.php
+++ b/src/Composer/Package/BasePackage.php
@@ -53,7 +53,6 @@ abstract class BasePackage implements PackageInterface
      * READ-ONLY: The package id, public for fast access in dependency solver
      * @var int
      * @internal
-     * @readonly
      */
     public $id;
     /** @var string */
diff --git a/src/Composer/Util/Platform.php b/src/Composer/Util/Platform.php
index be37ba621..d27bda08c 100644
--- a/src/Composer/Util/Platform.php
+++ b/src/Composer/Util/Platform.php
@@ -201,6 +201,9 @@ class Platform
     {
         if ($fd === null) {
             $fd = defined('STDOUT') ? STDOUT : fopen('php://stdout', 'w');
+            if ($fd === false) {
+                return false;
+            }
         }
 
         // detect msysgit/mingw and assume this is a tty because detection