Dockerfile

@@ -1,4 +1,4 @@
-FROM php:7.4.7-cli-buster
+FROM php:8.1-cli-bookworm
 
 RUN apt-get update && apt-get install -y unzip
 RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

composer.json

@@ -5,12 +5,12 @@
   "license": "GNU GPL 3.0",
   "require": {
     "vlucas/phpdotenv": "^5.5",
-    "symfony/console": "^5.4",
+    "symfony/console": "^6.3",
     "phpmailer/phpmailer": "^6.8",
-    "cocur/slugify": "^4.3"
+    "cocur/slugify": "^4.5"
   },
   "require-dev": {
-    "phpunit/phpunit": "^9.6",
+    "phpunit/phpunit": "^10.3",
     "phpstan/phpstan": "^1.10"
   },
   "autoload": {

src/Session/DatabaseSessionHandler.php

@@ -86,12 +86,12 @@ class DatabaseSessionHandler implements ISessionHandler
         return true;
     }
 
-    public function gc($maxlifetime): bool
+    public function gc($maxlifetime): int|false
     {
         // empty on purpose
         // old sessions are deleted by MaintainDatabaseCommand
 
-        return true;
+        return 1;
     }
 
     public function create_sid(): string

tests/OAuth/GoogleOAuthTest.php

@@ -17,7 +17,7 @@ final class GoogleOAuthTest extends TestCase
         $redirectUrl = 'http://example.com/oauth';
 
         $requestMock = $this->getMockBuilder(IRequest::class)
-            ->setMethods(['setUrl', 'setMethod', 'setQuery', 'setHeaders', 'send'])
+            ->onlyMethods(['setUrl', 'setMethod', 'setQuery', 'setHeaders', 'send'])
             ->getMock();
         $googleOAuth = new GoogleOAuth($requestMock);
 
@@ -48,10 +48,10 @@ final class GoogleOAuthTest extends TestCase
         $redirectUrl = 'http://example.com/oauth';
 
         $requestMock = $this->getMockBuilder(IRequest::class)
-            ->setMethods(['setUrl', 'setMethod', 'setQuery', 'setHeaders', 'send'])
+            ->onlyMethods(['setUrl', 'setMethod', 'setQuery', 'setHeaders', 'send'])
             ->getMock();
         $responseMock = $this->getMockBuilder(IResponse::class)
-            ->setMethods(['getBody', 'getHeaders'])
+            ->onlyMethods(['getBody', 'getHeaders'])
             ->getMock();
         $googleOAuth = new GoogleOAuth($requestMock);