PHP表单：仅填写字段的成功电子邮件

Question

一直为此苦苦挣扎了一段时间。 基本上我有6个字段，名称，电子邮件，电话，位置，日期和预算。 名称和电子邮件是唯一必填字段。 收到电子邮件后，我还会看到其余字段。 是否可以仅接收已填写的字段？

这是代码；

<?php
// get posted data into local variables
$EmailFrom = "email@email.com";
$EmailTo = "email@email.com";
$Subject = "My form";
$Name = Trim(stripslashes($_POST['Name'])); 
$Email = Trim(stripslashes($_POST['Email'])); 
$Phone = Trim(stripslashes($_POST['Phone']));

$Location = Trim(stripslashes($_POST['Location'])); 
$Date = Trim(stripslashes($_POST['Date']));
$Budget = Trim(stripslashes($_POST['Budget'])); 

// validation
$validationOK=true;
if (!$validationOK) {
  print "<meta http-equiv=\"refresh\" content=\"0;URL=#\">";
  exit;
}

$userip = ($_SERVER['X_FORWARDED_FOR']) ? $_SERVER['X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'];

// prepare email body text
$Body = "";
$Body .= "Location: "; $Body .= $Location; $Body .= "\n";
$Body .= "Date: "; $Body .= $Date; $Body .= "\n";
$Body .= "Budget: "; $Body .= $Budget; $Body .= "\n";

$Body .= "Name: "; $Body .= $Name; $Body .= "\n";
$Body .= "Email: "; $Body .= $Email; $Body .= "\n";
$Body .= "Phone: "; $Body .= $Phone; $Body .= "\n";
$Body .= "User's IP: ". $userip;

// send email 
$success = mail($EmailTo, $Subject, $Body, "From: <$EmailFrom>");

// redirect to success page 
if ($success){
  print "<meta http-equiv=\"refresh\" content=\"0;URL=#\">";
}
else{
  print "<meta http-equiv=\"refresh\" content=\"0;URL=#\">";
}
?>

Answer 1

使用empty检查是否发布了值：

$Phone = !empty($_POST['Phone']) ? trim(stripslashes($_POST['Phone'])) : false;

然后，如果未填充$Phone它将为false，您可以执行以下操作：

if($Phone)
    $Body .= "Phone: "; $Body .= $Phone; $Body .= "\n";

Answer 2

您只需检查一下该值是否存在即可。 您可以这样做：

if (!empty($Location) { $Body .= "Location: "; $Body .= $Location; $Body .= "\n"; }

等等。 这就是说，如果位置不为空，则执行该代码

Answer 3

是的，只需在将字段合并到正文之前添加一个检查，例如：

if(!$Location)
{
    $Body .= "Location: "; $Body .= $Location; $Body .= "\n";
}
/*You can also use empty like: */
if(!empty($Date))
{
    $Body .= "Location: "; $Body .= $Date; $Body .= "\n";
}
/*Continue here*/

Answer 4

if (isset($_POST['phone'] && !empty($_POST['phone']){
    $phone = $_POST['phone'];
    //add $phone to email body
}