Php 表单响应不发送电子邮件

我有一张表格没有通过电子邮件发送回复，我不知道为什么。“$”中的任何内容似乎都不正确。这在我的电子邮件里是空白的。这是一个多页表单（2页），所以我想知道这就是问题所在，我遗漏了一些东西

这是我的密码：

HTML:

状态
艾尔
状态
状态

全名
姓
-->
电子邮件地址
电话号码

PHP:

---

您从不为

$full\u name

和

$zip

赋值。它们不会神奇地用表单中的值填充。1您必须自己分配这些值：

$full_name = $_POST['full_name'];
$zip = $_POST['zip'];
$email_body = "You have received a new message from the user $full_name.\n".
"Zip Code:\n $zip".

---

1 PHP过去有一个名为

register\u globals

的功能，默认情况下该功能处于启用状态，可以自动从表单中填充变量。但是这个特性在PHP5.3.0中被弃用，在PHP5.4.0中被删除

啊，这就是我错过的。我现在就试试，谢谢。不是表格上的专业人士（如你所见）！

<?php


$email_from = 'email@email.com';//<== update the email address
$email_subject = "Entry Received";
$email_body = "You have received a new message from the user $full_name.\n".
    "Zip Code:\n $zip".


$to = "email@email.com";//<== update the email address
$headers = "From: $email_address \r\n";
$headers .= "Reply-To: $email_address \r\n";
//Send the email!
mail($to,$email_subject,$email_body,$headers);
//done. redirect to thank-you page.
header('Location: submit.html');


// Function to validate against any email injection attempts
function IsInjected($str)
{
  $injections = array('(\n+)',
              '(\r+)',
              '(\t+)',
              '(%0A+)',
              '(%0D+)',
              '(%08+)',
              '(%09+)'
              );
  $inject = join('|', $injections);
  $inject = "/$inject/i";
  if(preg_match($inject,$str))
    {
    return true;
  }
  else
    {
    return false;
  }
}

?> 

$full_name = $_POST['full_name'];
$zip = $_POST['zip'];
$email_body = "You have received a new message from the user $full_name.\n".
"Zip Code:\n $zip".