Question

我的表单验证有问题，一切正常，除非它检查用户名也可以，但检查用户名是否可以在插入表之前和之后使用，所以继续获取用户名是不可用的代码看起来像这样

   Function get()
  {
    $error = array();
    $sth = $this->db->prepare('SELECT * FROM user WHERE username = :user');
    $sth->execute(array(':user' => $_POST['username']));
    $count = $sth->rowCount();
    If($count > 0)
    {
     $error['avaliable'] = 'The username is not avaliable';
    }
    If(!empty($error))
    {
      Return $error;
    }else{
    //insert codes goes here
   }
   }

Answer 1

你的控制声明在这里是错误的。试试这样的事情，

    Function get()
  {
    $error = array();
    $sth = $this->db->prepare('SELECT * FROM user WHERE username = :user');
    $sth->execute(array(':user' => $_POST['username']));
    $count = $sth->rowCount();
    If($count == 0)
    {
     //insert codes goes here
    }
    else If($count > 0)
    {
     $error['avaliable'] = 'The username is avaliable';
    }
    If(!empty($error))
    {
      Return $error;
    }
   }

错误验证用户名检查

1 个答案: