小编Jam*_*mes的帖子

每当我在表单中提交某些内容时,我想检查是否有任何字段为空.到目前为止,我所拥有的不起作用

$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$username = $_POST['username'];
$password = $_POST['password'];
$passwordconf = $_POST['passwordconf'];
$email = $_POST['email'];
$securityq = $_POST['securityq'];
$qanswer = $_POST['qanswer'];

if(empty($firstname) || empty($lastname) || empty($username) || empty($password) || empty($passwordconf) || empty($email) || empty($securityq) || empty($qanswer))
{
    echo "You did not fill out the required fields.";
}

和形式

<form name="registrationform" action="register.php">
    First Name:<input type="text" name="firstname">
    Last Name:<input type="text" name="lastname">
    Email:<input type="text" name="email">
    Username:<input type="text" name="username">
    Password:<input type="password" name="password">
    Confirm Password:<input type="password" name="passwordconf">
    Security Question:<input type="text" name="securityq"> …

是否可以将两个对象合并在一起？例如:

如果你有2个物体

    Dim returnOptionObject1 As OptionObject
    returnOptionObject1 = New OptionObject

    Dim returnOptionObject2 As OptionObject
    returnOptionObject2 = New OptionObject

然后设置它们的值

    returnOptionObject1.EntityID = OptionObject.EntityID
    returnOptionObject1.OptionId = OptionObject.OptionId
    returnOptionObject2.SystemCode = SystemCode
    returnOptionObject2.Facility = OptionObject.Facility

你能以某种方式将这些对象组合成一个新对象,如同

    Dim newObject As OptionObject = returnOptionObject1 + returnOptionObject1