PHP表单-如何隐藏未填写的内容表单选项

我目前正在为我工作的公司制作一个简单的PHP联系表单。它包括一些复选框和一些文本区域，这是php代码。

   <?php
function getPost($name){
return ( isset($_POST[$name])? $_POST[$name] : '');
}
$name = $_POST['name'];
$email = $_POST['email'];
$email2 = $_POST['email2'];
$landline = $_POST['landline'];
$mobile = $_POST['mobile'];
$pclandline = getPost('pclandline');
$pcmobile = getPost('pcmobile');
$pcemail = getPost('pcemail');
$zptf = getPost('zptf');
$zpf = getPost('zpf');
$zpsf = getPost('zpsf');
$opz = getPost('opz');
$opfg = getPost('opfg');
$opfs = getPost('opfs');
$tpz = getPost('tpz');
$tpf= getPost('tpf');
$zpfoct= getPost('zpfoct');
$opzoct= getPost('opzoct');
$zptfquan = $_POST['zptfquan'];
$zpfquan = $_POST['zpfquan'];
$zpsfquan = $_POST['zpsfquan'];
$opzquan = $_POST['opzquan'];
$opfgquan = $_POST['opfgquan'];
$opfsquan = $_POST['opfsquan'];
$tpzquan = $_POST['tpzquan'];
$tpfquan = $_POST['tpfquan'];
$zpfoctquan = $_POST['zpfoctquan'];
$opzoctquan = $_POST['opzoctquan'];
$promo = $_POST['promo'];
$message = $_POST['message'];
$formcontent=" From: $name 'n Email : $email 'n Confirm Email : $email2 'n Landline: $landline 'n Mobile: $mobile 'n PC Landline: $pclandline 'n PC Mobile: $pcmobile 'n PC Email: $pcemail 'n 'n 0.25l: $zptf 'n 0.25l Quantity: $zptfquan 'n 0.5l: $zpf 'n 0.5l Quantity: $zpfquan 'n 0.75l: $zpsf 'n 0.75l Quantity: $zpsfquan 'n 1.0l: $opz 'n 1.0l Quantity: $opzquan 'n 1.5lg: $opfg 'n 1.5lg Quantity: $opfgquan 'n 1.5ls: $opfs 'n 1.5ls Quantity: $opfsquan 'n 2.0l: $tpz 'n 2.0l Quantity: $tpzquan 'n 2.5l: $tpf 'n 2.5l Quantity: $tpfquan 'n 0.5l Octime: $zpfoct 'n 0.5l Octime Quantity: $zpfoctquan 'n 1.0l Octime: $opzoct 'n 1.0l Octime Quantity: $opzoctquan 'n Promotional Code: $promo 'n Message: $message";
$recipient = "replaced email";
$subject = "Glass Sweet Jars Quote";
$mailheader = "From: $email 'r'n";
mail($recipient, $subject, $formcontent, $mailheader) or die("Error!");
echo "Thank you! We will contact you as soon as possible with your quote" . " -" . "<a href='index.html'>Return Home</a>";
?>

我的问题是，当我收到电子邮件时，它列出了表单上的所有内容，无论用户是否在其中勾选或写入，这使得挑选相关数据非常耗时，是否有任何方法可以隐藏用户在该特定电子邮件中未填写的任何区域?

提前感谢!