Convert method to helper function

Additionally, the function was refactored to make use of the splat operator

Author: grandeljay

src/Detectors/Languages.php

@@ -3,6 +3,8 @@
 
 namespace Embed\Detectors;
 
+use function Embed\isEmpty;
+
 class Languages extends Detector
 {
     /**
@@ -17,7 +19,7 @@ public function detect(): array
             $language = $node->getAttribute('hreflang');
             $href = $node->getAttribute('href');
 
-            if (self::isEmpty($language) || self::isEmpty($href)) {
+            if (isEmpty($language, $href)) {
                 continue;
             }
 
@@ -26,13 +28,4 @@ public function detect(): array
 
         return $languages;
     }
-
-    private function isEmpty(string $value): bool
-    {
-        $skipValues = array(
-            'undefined',
-        );
-
-        return empty($value) || in_array($value, $skipValues);
-    }
 }

src/functions.php

@@ -132,3 +132,18 @@ function getDirectory(string $path, int $position): ?string
     $dirs = explode('/', $path);
     return $dirs[$position + 1] ?? null;
 }
+
+function isEmpty(mixed ...$values): bool
+{
+    $skipValues = array(
+        'undefined',
+    );
+
+    foreach ($values as $value) {
+        if (empty($value) || in_array($value, $skipValues)) {
+            return true;
+        }
+    }
+
+    return false;
+}