Default non-existing environment variable to empty string

symfony · Girgias · Jun 24, 2025 · Jun 24, 2025 · Jun 24, 2025 · Jun 24, 2025
commit dfcef56d6fc8ec1bbd849876a7969d0b67ce457f
diff --git a/src/Symfony/Component/Process/ExecutableFinder.php b/src/Symfony/Component/Process/ExecutableFinder.php
@@ -62,14 +62,15 @@ public function find(string $name, ?string $default = null, array $extraDirs = [
             return $name;
         }
 
+        $path = getenv('PATH') ?: getenv('Path') ?: '';
         $dirs = array_merge(
-            explode(\PATH_SEPARATOR, getenv('PATH') ?: getenv('Path')),
+            explode(\PATH_SEPARATOR, $path),
             $extraDirs
         );
 
         $suffixes = $this->suffixes;
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            $pathExt = getenv('PATHEXT');
+            $pathExt = getenv('PATHEXT') ?: '';
             $suffixes = array_merge($suffixes, $pathExt ? explode(\PATH_SEPARATOR, $pathExt) : ['.exe', '.bat', '.cmd', '.com']);
         }
         $suffixes = '' !== pathinfo($name, \PATHINFO_EXTENSION) ? array_merge([''], $suffixes) : array_merge($suffixes, ['']);