Question

我想用php制作计算器，我写了这段代码但是没有解决问题是什么？我使用iclude来附加函数并使用select和option标记并给出选项名称来获取数据。我使用phpstorm来解决问题，但没有问题。抱歉我的英文不好

<!DOCTYPE html>
<html>
<head>
</head>


<body>
<form style="margin:25%;" action="#" method="GET">
    <input type="text" name="num1" size="20" placeholder="number 1">
    <input type="text" name="num2" size="20" placeholder="number 2">

    <select name="massoud">
        <option name="jam1">jam</option>
        <option name="tafrigh1">tafrigh</option>
        <option name="zarb1">zarb</option>
        <option name="taghsim1">taghsim</option>
        <option name="baghimande1">baghimande</option>
    </select>

    <input type="submit" name="submit" value="calculate">
</form>



<?php

include 'calib.php';

?>


<?php


if(isset($_GET['submit']) && isset($_GET['jam1'])) {


    $a1 = $_GET['num1'];
    $b1 = $_GET['num2'];



    echo jam1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['tafrigh1'])) {


    $a1 = $_GET['num1'];
    $b1 = $_GET['num2'];



    echo tafrigh1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['zarb1'])) {


    $a1 = $_GET['num1'];
    $b1 = $_GET['num2'];



    echo zarb1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['taghsim1'])) {


    $a1 = $_GET['num1'];
    $b1 = $_GET['num2'];



    echo taghsim1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['baghimande1'])) {


    $a1 = $_GET['num1'];
    $b1 = $_GET['num2'];



    echo baghimande1($a1, $b1);

}

?>



 </body>
 </html>

这是包含文件

<?php

function jam1($a1, $b1){
return $a1 + $b1;
}
function tafrigh1($a1, $b1){
return $a1 - $b1;
}
function zarb1($a1, $b1){
return $a1 * $b1;
}
function taghsim1($a1, $b1){
return $a1 / $b1;
}
function baghimande1($a1, $b1){
return $a1 % $b1;
}

?>

这是结果网址 http://localhost/calib/?num1=6&num2=5&massoud=tafrigh&submit=calculate#

Answer 1

在每种情况下，您都要求选项的确切值，而不是选择的值，这是发布的内容：

 if(isset($_GET['submit']) && isset($_GET['jam1'])) {

没有$_GET['jam1']，您应该将其更改为您的选择名称：

if(isset($_GET['submit']) && ($_GET['massoud'] == 'jam1')) {

您需要将其添加到每个案例中

编辑：我没注意到您的选择也设置错误：

<select name="massoud">
    <option name="jam1">jam</option>
    <option name="tafrigh1">tafrigh</option>
    <option name="zarb1">zarb</option>
    <option name="taghsim1">taghsim</option>
    <option name="baghimande1">baghimande</option>
</select>

您正在设置每个选项的名称而不是值，请更改为：

<select name="massoud">
    <option value="jam1">jam</option>
    <option value="tafrigh1">tafrigh</option>
    <option value="zarb1">zarb</option>
    <option value="taghsim1">taghsim</option>
    <option value="baghimande1">baghimande</option>
</select>

Answer 2

更改此行

if(isset($_GET['submit']) && isset($_GET['jam1'])) {

到此：

if(isset($_GET['submit']) && isset($_GET['massoud']) && $_GET['massoud'] == 'jam1') {

jam1是值而不是键。 massoud是选择下拉列表的名称，因此是密钥。

Answer 3

应该是：

<select name="massoud">
    <option value="jam1">jam</option>
    <option value="tafrigh1">tafrigh</option>
    <option value="zarb1">zarb</option>
    <option value="taghsim1">taghsim</option>
    <option value="baghimande1">baghimande</option>
</select>

使用$_GET['massoud']，您将获得所选的值。

Answer 4

将您的代码更改为此，您将在左下角获得输出。

<?php


if(isset($_GET['submit']) && isset($_GET['massoud']) && $_GET['massoud'] == "jam") {


$a1 = $_GET['num1'];
$b1 = $_GET['num2'];



echo jam1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['massoud']) && $_GET['massoud'] == "tafrigh") {


$a1 = $_GET['num1'];
$b1 = $_GET['num2'];



echo tafrigh1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['massoud']) && $_GET['massoud'] == "zarb") {


$a1 = $_GET['num1'];
$b1 = $_GET['num2'];



echo zarb1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['massoud']) && $_GET['massoud'] == "taghsim") {


$a1 = $_GET['num1'];
$b1 = $_GET['num2'];



echo taghsim1($a1, $b1);

}

if(isset($_GET['submit']) && isset($_GET['massoud']) && $_GET['massoud'] == "baghimande1") {


$a1 = $_GET['num1'];
$b1 = $_GET['num2'];



echo baghimande1($a1, $b1);

}

?>

用PHP制作计算器

4 个答案: