user table

kernel/Header.php

@@ -11,14 +11,14 @@ namespace kernel;
 
 class Header
 {
-    protected $list = [];
+    protected array $list = [];
 
-    public function add($key, $value)
+    public function add($key, $value): void
     {
         $this->list[$key] = $value;
     }
 
-    public function set()
+    public function set(): void
     {
         foreach ($this->list as $key=>$v){
             header($key . ": " . $v);