嘿，伙计们，我正在为学校做一个PHP计算器，但我似乎无法让它发挥作用。我不擅长PHP，无法理解。当我在会员资格下运行它并计算总数时，无论我选择什么选项，它都会自动切换到黄金会员资格。有什么想法吗？以下是代码：
<?php
$tax = 0;
$total = 0;
$membership = "gold";
$tennis = "no";
$racquetball = "no";
$golf = "no";
$child_care = "no";
$personal_trainer = "no";
$swimming_pool = "no";
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (!empty($_POST["tax"])) {
$tax = test_input($_POST["tax"]);
}
if ($membership == "basic") {
$total = 80;
}
elseif ($membership == "platinum") {
$total = 100;
}
else {
$total = 120;
}
if (isset($_POST["tennis"])) {
$tennis = "yes";
$total = $total + 15;
}
if (isset($_POST["racquetball"])) {
$racquetball = "yes";
$total = $total + 20;
}
if (isset($_POST["golf"])) {
$golf = "yes";
$total = $total + 25;
}
if (isset($_POST["child_care"])) {
$child_care = "yes";
$total = $total + 15;
}
if (isset($_POST["personal_trainer"])) {
$personal_trainer = "yes";
$total = $total + 20;
}
if (isset($_POST["swimming_pool"])) {
$swimming_pool = "yes";
$total = $total + 25;
}
$total = $total + $total * $tax;
$total = round($total, 2);
}
?>
<html>
<head>
<title>Health Club (PHP)</title>
</head>
<body style="padding: 30px">
<h2>Health Club (PHP)</h2>
Franklin Covington <p>
<form method="post" name="healthClubForm" id="healthClubForm"
action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
<div style="float:left; width:130px; background-color:pink;">
<dl>
<dt>Membership
<dt><input type="radio" name="membership" onchange="reloadForm"
<?php if (isset($membership) && $membership=="basic") echo "checked";?>
value="basic"> Basic
<dt><input type="radio" name="membership" onchange="reloadForm"
<?php if (isset($membership) && $membership=="platinum") echo "checked";?>
value="platinum"> Platinum
<dt><input type="radio" name="membership" onchange="reloadForm"
<?php if (isset($membership) && $membership=="gold") echo "checked";?>
value="Gold"> Gold
</dl>
</div>
<div style="float:left; width:180px; background-color:yellow;">
<dl>
<dt>Additional Charges (1)
<dt><input type="checkbox" onchange="reloadForm"
<?php if (isset($tennis) && $tennis=="yes") echo "checked";?>
name="tennis"> Tennis
<dt><input type="checkbox" onchange="reloadForm"
<?php if (isset($racquetball) && $racquetball=="yes") echo "checked";?>
name="racquetball"> Racquetball
<dt><input type="checkbox" onchange="reloadForm"
<?php if (isset($golf) && $golf=="yes") echo "checked";?>
name="golf"> Golf
</dl>
</div>
<div style="float:left; width:180px; background-color:red;">
<dl>
<dt>Additional Charges (2)
<dt><input type="checkbox" onchange="reloadForm"
<?php if (isset($child_care) && $child_care=="yes") echo "checked";?>
name="child_care"> Child Care
<dt><input type="checkbox" onchange="reloadForm"
<?php if (isset($personal_trainer) && $personal_trainer=="yes") echo "checked";?>
name="personal_trainer"> Personal Trainer
<dt><input type="checkbox" onchange="reloadForm"
<?php if (isset($swimming_pool) && $swimming_pool=="yes") echo "checked";?>
name="swimming_pool"> Swimming Pool
</dl>
</div>
<div style="clear:both"> </div>
<div style="float:left; width:150px; background-color:lightcoral;">
<dl>
<dt><input type="submit" value="Calculate Total">
<dt><input type="submit" value="Clear">
</dl>
</div>
<div style="float:left; background-color:lightgreen;">
<dl>
<dt>Tax: <input type="text" onchange="reloadForm" name="tax" value="<?php echo $tax;?>" size="10">
<dt>Total: <input type="text" name="total" value="<?php echo $total;?>" size="10">
</dl>
</div>
<script>
function reloadForm() {
document.getElementById("healthClubForm").submit();
}
</script>`your text`
</form>
</body>
</html>
我看了看我的黄金，看起来我没有做错什么。