Php switch-case语句是否灵活？

我创建了以下代码，因此当用户选择销售、账单、营销、财务等部门并使用我创建的联系表单时，电子邮件将发送给公司中的适当人员

<?php

$ip = $_POST['ip'];
$httpref = $_POST['httpref'];
$httpagent = $_POST['httpagent'];
$visitor = $_POST['visitor'];
$visitormail = $_POST['visitormail'];
$notes = $_POST['notes'];
$attn = $_POST['attention'];
$prefphone = $_POST['phone'];
$contact_pref = $_POST['contact'];
$subject = $_POST['subject'];



if (eregi('http:', $notes)) {
  die ("Do NOT try that! ! ");
}
if(!$visitormail == "" && (!strstr($visitormail,"@") || !strstr($visitormail,".")))
{
  echo "<h2>Use Back - Enter valid e-mail</h2>\n";
  $badinput = "<h2>Feedback was NOT submitted</h2>\n";
  echo $badinput;
  die ("Go back! ! ");
}

if(empty($visitor) || empty($visitormail) || empty($notes )) {
  echo "<h2>Use Back - fill in all fields</h2>\n";
  die ("Use back! ! ");
}

$todayis = date("l, F j, Y, g:i a") ;

$attention = $attention ;
$subject = $attention;

$notes = stripcslashes($notes);

$message = " $todayis [EST] \n
Attention: $attn \n
From: $visitor ($visitormail)\n
Please contact me by: $contact \n
Phone Number: $phone \n
Subject:  $subject \n
Message: $notes \n
Additional Info : IP = $ip \n
Browser Info: $httpagent \n
Referral : $httpref \n
";

$from = "From: $visitormail\r\n";



switch ($attention) {
    case "Residential":
        mail("mike@company.com", $subject, $message, $from);
        break;
    case "Billing":
        mail("mike@company.com", $subject, $message, $from);
        break;
    case "Service":
        mail("service@company.com", $subject, $message, $from);
        break;
    case "Technical":
        mail("service@company.com", $subject, $message, $from);
        break;
}

?>

当客户收到来自的电子邮件时：字段会显示发件人的电子邮件，这对于除技术支持部门以外的所有部门都适用。该部门需要事先知道发件人的电子邮件，因此我需要对其进行编码，以便在选择技术选项时，他们收到电子邮件时，地址为默认地址，即。technical@company.com.

---

不确定如何执行此操作，以及是否可以使用switch/case语句执行此操作？

我可能在这里遗漏了一些内容，但您不能仅仅替换：

case "Technical":
        mail("service@company.com", $subject, $message, $from);
        break;

与

---

开关柜内？

谢谢！我是个新手，因此我不确定在哪里以及如何声明$technical_emailaddress等于多少。我在顶部试过，如下图所示。。。但这不起作用$ip=$_POST['ip']$httpref=$_POST['httpref']$httpagent=$_POST['httpagent']$访问者=$_POST['visitor']$visitormail=$_POST['visitormail']$备注=$_POST['notes']$收件人=$_POST[“注意]$prefphone=$_POST['phone']$联系方式_pref=$_POST['contact']$主题=$_POST['subject']$技术邮件地址=$\u POST['technical@company.com']; 谢谢你的帮助！干杯，追逐者

case "Technical":
        mail("service@company.com", $subject, $message, $technical_emailaddress);
        break;