fix on env var

Author: joanfabregat

.github/workflows/phpunit.yml

@@ -25,11 +25,6 @@ jobs:
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress --no-suggest
 
-      - name: Check Environment Variable
-        env:
-          DOCUMENT_CLOUD_API_KEY: ${{ secrets.DOCUMENT_CLOUD_API_KEY }}
-        run: echo "DOCUMENT_CLOUD_API_KEY=${{ secrets.DOCUMENT_CLOUD_API_KEY }}"
-
       # Run tests
       - name: Run tests
         env:

src/Client.php

@@ -48,7 +48,7 @@ public function __construct(
         ?string $apiKey = null,
         ?ClientInterface $client = null,
     ) {
-        $apiKey = $apiKey ?? $_ENV['DOCUMENT_CLOUD_API_KEY'] ?? null;
+        $apiKey = $apiKey ?? getenv('DOCUMENT_CLOUD_API_KEY') ?? null;
         if (!$apiKey) {
             throw new MissingApiKeyException();
         }