新增路徑

 📌 case '/login':
          return require "./views/login.php";
     case '/login_check':
          $u = @$_POST["user"];
          $p = @$_POST["pass"];
          $sql = new sql( );
          $sql -> config("root","","shop","user");
          $sql -> put_data(['id','uid','name','password']);
          $data = $sql -> sel();
          $check = false;
          foreach($data as $key => $val)
          {
              if($data[$key]['name'] == $u)
              {
                  if($data[$key]['pass'] == md5($p))
                  {
                      $check = true;
                  }
              }
          }
          if($check)
          {
              //echo 'alert(\'登入成功\')';
              header('refresh:0;url="/"');
          }
          else
          {
              //echo 'alert(\'登入失敗\')';
              header('refresh:0;url="/"');
          }

/login → 登入頁面

/login_check → 處理登入資料，透過資料庫去比對

 📌 foreach($data as $key => $val)
     {
         if($data[$key]['name'] == $u)
         {
             if($data[$key]['pass'] == md5($p))
             {
                 $check = true;
             }
         }
     }

讀取資料庫的資料，放入$data

$key → 第幾筆資料

$data[$key]['name'] → 會員名稱

$data[$key]['pass'] → 會員密碼

HTML

 📌 <div class = view>
      <form action='/login_check' method=POST>
      <div class = item>
           <span>帳號<span>
           <input type = text name=user>
      </div>
      <div class = item>
           <span>密碼<span>
           <input type = password name=pass>
      </div>
      <div class = item>
           <input type = submit value=確認>
      </div>
      </form>
      </div>

跟註冊頁面很像，但少了再次密碼確認

程式碼收錄:https://github.com/chyhhwen/shopping-system