Fixes

Author: RobiNN1

src/Http.php

@@ -28,15 +28,16 @@ public static function queryString(array $preserve = [], array $additional = [])
 
         if (!empty($_SERVER['REQUEST_URI'])) {
             $url_parts = parse_url($_SERVER['REQUEST_URI']);
-            if (!empty($url_parts['query'])) {
+
+            if (isset($url_parts['query']) && ($url_parts['query'] !== '')) {
                 parse_str($url_parts['query'], $query);
                 $query = array_intersect_key($query, $preserve);
             }
         }
 
         $query += $additional;
 
-        return $query ? '?'.http_build_query($query) : '';
+        return $query !== [] ? '?'.http_build_query($query) : '';
     }
 
     /**

tests/HttpTest.php

@@ -14,7 +14,7 @@
 final class HttpTest extends TestCase {
     public function testQueryString(): void {
         $_SERVER['REQUEST_URI'] = '/?dashboard=server';
-        $this->assertSame('?dashboard=server&param1=yes', Http::queryString([], ['param1' => 'yes']));
+        $this->assertSame('?dashboard=server&param1=yes&param2=0', Http::queryString([], ['param1' => 'yes', 'param2' => 0]));
 
         $_SERVER['REQUEST_URI'] = '/?dashboard=redis&server=6&p=3';
         $this->assertSame('?dashboard=redis&server=6', Http::queryString(['server']));