Fix dump-env command when .env files reference other env vars

Author: nicolas-grekas

src/Command/DumpEnvCommand.php

@@ -57,7 +57,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         $path = $this->options->get('root-dir').'/'.($runtime['dotenv_path'] ?? '.env');
 
         if (!$env || !$input->getOption('empty')) {
-            $vars = $this->loadEnv($path, $env, $runtime);
+            $vars = $this->loadEnv($path, $env, $runtime, $projectDirCookie);
             $env = $vars[$envKey];
         }
 
@@ -66,6 +66,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         }
 
         $vars = var_export($vars, true);
+        $vars = str_replace($projectDirCookie, "'.(\$_SERVER['APP_PROJECT_DIR'] ?? '').'", $vars);
         $vars = <<<EOF
             <?php
 
@@ -81,7 +82,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         return 0;
     }
 
-    private function loadEnv(string $path, ?string $env, array $runtime): array
+    private function loadEnv(string $path, ?string $env, array $runtime, ?string &$projectDirCookie): array
     {
         if (!file_exists($autoloadFile = $this->config->get('vendor-dir').'/autoload.php')) {
             throw new \RuntimeException(\sprintf('Please run "composer install" before running this command: "%s" not found.', $autoloadFile));
@@ -98,6 +99,7 @@ private function loadEnv(string $path, ?string $env, array $runtime): array
         unset($_SERVER[$envKey]);
         $_ENV = [$envKey => $env];
         $_SERVER['SYMFONY_DOTENV_VARS'] = implode(',', array_keys($_SERVER));
+        $_SERVER['APP_PROJECT_DIR'] = $projectDirCookie = hash('xxh128', random_bytes(8));
         putenv('SYMFONY_DOTENV_VARS='.$_SERVER['SYMFONY_DOTENV_VARS']);
 
         try {