IIS, ASP, PHP，是網站開發中非常重要的三個概念，在實際應用中有著各自的優缺點。
IIS，即Internet Information Services，是微軟公司開發的Web服務器軟件。IIS有著強大的性能和可靠性，在Windows操作系統下較為常見。IIS可以支持多種編程語言，如ASP、.NET等，通過使用IIS，網站可以被快速地搭建和部署。例如，通過以下代碼，我們可以使用IIS來部署一個簡單的ASP網站：
<%@ Language=VBScript %>
<html>
<head>
<title>ASP.NET Title</title>
</head>
<body>
<% Response.Write("Hello, ASP.NET!") %>
</body>
</html><html>
<head></title>Calculator</head>
<body>
<%
If Request.Form("Calculate") = "計算" Then
Num1 = CInt(Request.Form("Num1"))
Num2 = CInt(Request.Form("Num2"))
Operator = Request.Form("Operator")
Select Case Operator
Case "+"
Result = Num1 + Num2
Case "-"
Result = Num1 - Num2
Case "*"
Result = Num1 * Num2
Case "/"
Result = Num1 / Num2
End Select
Response.Write("計算結果是：" & Result)
End If
%>
<form method="post" action="">
<p>
<label>請輸入第一個數字：</label>
<input type="text" name="Num1">
</p>
<p>
<label>請選擇操作符：</label>
<select name="Operator">
<option value="+"></option>+
<option value="-"></option>-
<option value="*">*</option>*
<option value="/">/</option>/
</select>
</p>
<p>
<label>請輸入第二個數字：</label>
<input type="text" name="Num2">
</p>
<p>
<input type="submit" name="Calculate" value="計算">
</p>
</form>
</body>
</html><html>
<head></title>Guestbook</head>
<body>
<?php
$conn = mysqli_connect("localhost", "guestbook", "password", "guestbook");
if(mysqli_connect_errno())
{
echo "無法連接到數據庫: " . mysqli_connect_error();
}
if(isset($_POST['submit']))
{
$name = $_POST['name'];
$email = $_POST['email'];
$msg = $_POST['msg'];
$sql = "INSERT INTO `messages`(`name`, `email`, `msg`, `datetime`) VALUES ('$name', '$email', '$msg', NOW())";
mysqli_query($conn, $sql);
echo "留言成功！";
}
$sql = "SELECT * FROM `messages` ORDER BY `datetime` DESC";
$result = mysqli_query($conn, $sql);
while($row = mysqli_fetch_array($result))
{
?>
<div>
<p><b><?php echo $row['name']; ?></b></p>
<p><i><?php echo $row['email']; ?></i></p>
<p><?php echo $row['msg']; ?></p>
<p><i><?php echo $row['datetime']; ?></i></p>
</div>
<?php
}
mysqli_close($conn);
?>
<form method="post" action="">
<p>
<label>姓名：</label>
<input type="text" name="name">
</p>
<p>
<label>電子郵件：</label>
<input type="text" name="email">
</p>
<p>
<label>留言：</label>
<textarea name="msg" rows="5" cols="50"></textarea>
</p>
<p>
<input type="submit" name="submit" value="提交">
</p>
</form>
</body>
</html>