我有我的代碼爲我的PHP:如何顯示我的PHP和HTML程序的答案嗎?
<?php
$num1= $_REQUEST["number1"];
$num2= $_REQUEST["number2"];
$arithmetic = $_POST['arithmetic'];
switch ($arithmetic) {
case "addition":
$answer = $num1+$num2;
echo "<p>$num1 added with $num2 is " . number_format($answer,2) . "</p>";
break;
case "subtraction":
$answer = $num1-$num2;
echo "<p>$num2 subtracted from $num1 is " . number_format($answer,2) . "</p>";
break;
case "multiplication":
$answer = $num1*$num2;
echo "<p>$num1 multiplied by $num2 is " . number_format($answer,2) . "</p>";
break;
case "division":
$answer = $num1/$num2;
echo "<p>$num1 divided by $num2 is " . number_format($answer,2) . "</p>";
break;
case "modulus":
$answer = $num1%$num2;
echo "<p>The remainder of $num1 divided by $num2 is " . number_format($answer,2) . "</p>";
break;
}
?>
<br>
<form action="calcD.html" target="iframeMain">
<input type="submit" value="go back">
</form>
<?php
echo "<HR>";
highlight_file("calcD.php");
?>
和我爲我的HTML代碼:
<html>
<head>
<link href="reset.css" rel="stylesheet" type="text/css">
<link href="css3.css" rel="stylesheet" type="text/css">
<link href='https://fonts.googleapis.com/css?family=Scada:400,700' rel='stylesheet' type='text/css'>
</head>
<body>
<h2>Dropdown Calculator</h2>
<form action="calcD.php" method="POST" target="iframeMain" autocomplete="off">
<p>Number 1:<input type="text" name="number1"></p>
<p>Number 2:<input type="text" name="number2"></p>
<h3>Type of Arithmetic</h3>
<select name="arithmetic">
<option name="addition">Addition</option>
<option name="subtraction">Subtraction</option>
<option name="multiplication">Multiplication</option>
<option name="division">Division</option>
<option name="modulus">Modulus</option>
</select>
<input type="submit" name="compute" value="Compute">
</form>
<a href="assignment3.html" target="iframeMain">Back to Menu</a>
</body>
</html>
但是當我嘗試使用我的節目,回答不顯示。我檢查了多個網站,並且我的HTML和我的PHP沒有錯誤,但是我的答案沒有顯示。我甚至嘗試過爲每個程序使用If和Elseif語句。有沒有一個鏈接,我失蹤了他們?
編輯:我需要使用switch (strtolower($arithmetic))
而不是標準的開關,以允許其顯示。
我看不到「選擇」:http://www.w3schools.com/tags/att_option_selected.asp –
我加了這個,仍然沒有運氣顯示我的答案。 – Justin
然後更新你的問題。 –