symfony
diff --git a/‎src/Symfony/Component/Runtime/SymfonyRuntime.php
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+8-2Lines changed: 8 additions & 2 deletions b/‎src/Symfony/Component/Runtime/SymfonyRuntime.php
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+8-2Lines changed: 8 additions & 2 deletions
diff --git a/‎src/Symfony/Component/Runtime/Tests/phpt/autoload.php
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+2-1Lines changed: 2 additions & 1 deletion b/‎src/Symfony/Component/Runtime/Tests/phpt/autoload.php
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+2-1Lines changed: 2 additions & 1 deletion
diff --git a/‎src/Symfony/Component/Runtime/Tests/phpt/dotenv_overload.php
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+15Lines changed: 15 additions & 0 deletions b/‎src/Symfony/Component/Runtime/Tests/phpt/dotenv_overload.php
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+15Lines changed: 15 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Runtime/Tests/phpt/dotenv_overload.phpt
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+12Lines changed: 12 additions & 0 deletions b/‎src/Symfony/Component/Runtime/Tests/phpt/dotenv_overload.phpt
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+12Lines changed: 12 additions & 0 deletions
@@ -40,6 +40,7 @@ class_exists(MissingDotenv::class, false) || class_exists(Dotenv::class) || clas
  *  - "prod_envs" to define the names of the production envs - defaults to ["prod"];
  *  - "test_envs" to define the names of the test envs - defaults to ["test"];
  *  - "use_putenv" to tell Dotenv to set env vars using putenv() (NOT RECOMMENDED.)
+ *  - "dotenv_overload" to tell Dotenv to override existing vars
  *
  * When the "debug" / "env" options are not defined, they will fallback to the
  * "APP_DEBUG" / "APP_ENV" environment variables, and to the "--env|-e" / "--no-debug"
@@ -84,6 +85,7 @@ class SymfonyRuntime extends GenericRuntime
      *   use_putenv?: ?bool,
      *   runtimes?: ?array,
      *   error_handler?: string|false,
+     *   dotenv_overload?: ?bool,
      * } $options
      */
     public function __construct(array $options = [])
@@ -96,10 +98,14 @@ public function __construct(array $options = [])
         }
 
         if (!($options['disable_dotenv'] ?? false) && isset($options['project_dir']) && !class_exists(MissingDotenv::class, false)) {
-            (new Dotenv())
+            ($dotenv = new Dotenv())
                 ->setProdEnvs((array) ($options['prod_envs'] ?? ['prod']))
                 ->usePutenv($options['use_putenv'] ?? false)
-                ->bootEnv($options['project_dir'].'/'.($options['dotenv_path'] ?? '.env'), 'dev', (array) ($options['test_envs'] ?? ['test']));
+                ->bootEnv($fullDotenvPath = $options['project_dir'].'/'.($options['dotenv_path'] ?? '.env'), 'dev', (array) ($options['test_envs'] ?? ['test']));
+            if ($options['dotenv_overload'] ?? false) {
+                $dotenv->overload($fullDotenvPath);
+            }
+
             $options['debug'] ?? $options['debug'] = '1' === $_SERVER['APP_DEBUG'];
             $options['disable_dotenv'] = true;
         } else {
 
@@ -2,7 +2,8 @@
 
 use Symfony\Component\Runtime\SymfonyRuntime;
 
-$_SERVER['APP_RUNTIME_OPTIONS'] = [
+$_SERVER['APP_RUNTIME_OPTIONS'] = $_SERVER['APP_RUNTIME_OPTIONS'] ?? [];
+$_SERVER['APP_RUNTIME_OPTIONS'] += [
     'project_dir' => __DIR__,
 ];
 
 
@@ -0,0 +1,15 @@
+<?php
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+$_SERVER['SOME_VAR'] = 'ccc';
+$_SERVER['APP_RUNTIME_OPTIONS'] = [
+    'dotenv_overload' => true,
+];
+
+require __DIR__.'/autoload.php';
+
+return function (Request $request, array $context) {
+    return new Response('OK Request '.$context['SOME_VAR']);
+};
@@ -0,0 +1,12 @@
+--TEST--
+Test Dotenv overload
+--INI--
+display_errors=1
+--FILE--
+<?php
+
+require $_SERVER['SCRIPT_FILENAME'] = __DIR__.'/dotenv_overload.php';
+
+?>
+--EXPECTF--
+OK Request foo_bar