我有一个动态页面（holidays.php），来自id的数据使用get方法，如url holidays.php？id = 1
代码是
include('header.php');
include('db.php');
$id = $_GET['id'];
$sql_hp = "select * from `holiday_package` where `id` ='$id'";
$res_hp = mysql_query($sql_hp);
$rec_hp = mysql_fetch_array($res_hp);
我在同一页面上有一个联系表单，客户填写并向管理员发送电子邮件。
<form action="holidays-form.php" method="post">
<!--<span class="success"><?php echo $smsg; ?></span>
<span class="fail"><?php echo $emsg; ?></span>-->
<h3>Book Package</h3>
<div class="form-group">
<div class="form-elements">
<label>Name</label>
<div class="form-item">
<input type="text" name="name" required="required">
</div>
</div>
</div>
<div class="form-group">
<div class="form-elements">
<label>Email ID</label>
<div class="form-item">
<input type="email" name="email" required="required">
</div>
</div>
</div>
<div class="form-group">
<div class="form-elements">
<label>Contact Number</label>
<div class="form-item">
<input type="text" name="mobile" required="required">
</div>
</div>
</div>
<div class="form-select-date">
<div class="form-elements">
<label>Select Travel Date</label>
<div class="form-item"><i class="awe-icon awe-icon-calendar"></i>
<input type="text" name="date" class="awe-calendar" value="Date" required="required">
</div>
</div>
</div>
<div class="form-select-date hide">
<div class="form-elements">
<label>Select Package</label>
<div class="form-item">
<input type="hidden" name="pkg_title" value="<?php echo $rec_hp['pkg_title'];?>">
</div>
</div>
</div>
<div class="form-group">
<div class="form-elements hide">
<label>Package Price</label>
<div class="form-item">
<input type="hidden" name="pkg_price" value="<?php echo $rec_hp['pkg_price'];?>" />
</div>
</div>
</div>
<div class="form-group" style="margin-top:-15px;">
<div class="form-elements">
<label>No. of Guest</label>
<div class="form-item">
<select name="adult" required>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
</select>
</div>
</div>
</div>
<div class="price"><em>Total Cost for this Package</em> <div class="amount" id="cost_dv">INR <?php echo $rec_hp['pkg_price'];?>/-</div></div>
<div class="form-submit">
<div class="add-to-cart">
<button type="submit">Send Query for Booking</button>
</div>
</div>
</form>
我通过holidays-form.php页面发送邮件，请参阅下面的代码
<?php
$name = $_POST['name'];
$email = $_POST['email'];
$mobile = $_POST['mobile'];
$date = $_POST['date'];
$pkg_title = $_POST['pkg_title'];
$pkg_price = $_POST['pkg_price'];
$adult = $_POST['adult'];
$from = 'Company Name';
$to = "info@companyname.com";
$subject = "New Holiday Package Submission";
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$message = '<html><body>
<table width="500" border="0" cellspacing="0" cellpadding="0" style="border:#ccc solid 1px;">
<tr>
<td width="151" height="30" style="background:#f3f3f3; padding-left:5px;">Name</td>
<td width="149" style="background:#f3f3f3; padding- right:5px;">'.$name.'</td>
</tr>
<tr>
<td height="30" style="padding-left:5px;">Email</td>
<td style="padding-right:5px;">'.$email.'</td>
</tr>
<tr>
<td height="30" style="background:#f3f3f3; padding-left:5px;">Mobile</td>
<td style="background:#f3f3f3; padding-right:5px;">'.$mobile.'</td>
</tr>
<tr>
<td height="30" style="padding-left:5px;">Date</td>
<td style="padding-right:5px;">'.$date.'</td>
</tr>
<tr>
<td height="30" style="background:#f3f3f3; padding-left:5px;">Package Name</td>
<td style="background:#f3f3f3; padding-right:5px;">'.$pkg_title.'</td>
</tr>
<tr>
<td height="30" style="padding-left:5px;">Package Price (adult) </td>
<td style="padding-right:5px;">'.$pkg_price.'</td>
</tr>
<tr>
<td height="30" style="background:#f3f3f3; padding-left:5px;">Package Price (child)</td>
<td style="background:#f3f3f3; padding-right:5px;">'.$adult.'</td>
</tr>
</table>
</body></html>';
$success = mail($to,$subject,$message,$headers);
if ($success == true) {
header("Location:holidays.php?s=mail sent");
}
else {
header("Location:holidays.php?s=error");
}
?>
我想在holidays.php中显示成功消息，我已经将代码写在这样的表单标记中
<?php
$s = $_GET['s'];
if ($s=="mail sent") {
echo ('<span class="success">Thankyou! Your Package Has been Successfully Submitted!. We will Feedback you asap.</span>');
}
else if ($s=="error") {
echo ('<span class="fail">Sorry! Please ensure you have filled all fields Correctly.</span>');
}
但在提交表单holidays.php页面后显示错误信息（注意：第4行的C：\ xampp \ htdocs \ tricky-traveler \ holidays.php中的未定义索引：id），并显示成功消息。那么如何存储或发送我在页面顶部使用的$ id值。
答案 0 :(得分：2)
提供隐藏的<input />字段（如果您使用GET方法）：
<input type="hidden" name="id" value="<?php echo $id; ?>" />
如果您使用POST方法，只需将PHP更改为：
$id = $_POST['id'];
或者将您的<form>标记更改为：
<form action="holidays-form.php?id=<?php echo $id; ?>" method="post">
答案 1 :(得分：0)
您可以使用隐藏的表单字段
<input type="hidden" name="pkg_price" value="<?php echo htmlentities($_REQUEST['id']);?>" />
请确保在检查$_GET时将$_REQUEST更改为$id，因为您发布了表单（因此它会显示在$_POST或{{1 }}）。
答案 2 :(得分：0)
<input type="hidden" name="id" value="<?php echo $id?>">
//and in php page get your id using
$id = $_GET['id'];
$sql_hp = "select * from `holiday_package` where `id` ='$id'";