PHP查询表不起作用？

我正在尝试创建一个网站，我的PHP和html就是无法工作！！当我输入数据时，网站不会将信息发送到我的电子邮件，在输入表单中，我的验证将显示而不是占位符！！！请帮忙！！！！：-）

我的html如下所示：

<form class="form-horizontal" role="form" method="post" action="index.php">
       <div class="form-group">
    <label for="name" class="col-sm-2 control-label">Name</label>
    <div class="col-sm-10">
        <input type="text" class="form-control" id="name" name="name" placeholder="Preferred Name" value="<?php echo htmlspecialchars($_POST['name']); ?>">
    </div>
</div>
<div class="form-group">
    <label for="email" class="col-sm-2 control-label">Email</label>
    <div class="col-sm-10">
        <input type="email" class="form-control" id="email" name="email" placeholder="example@domain.com" value="<?php echo htmlspecialchars($_POST['email']); ?>">
    </div>
</div>
<div class="form-group">
    <label for="number" class="col-sm-2 control-label">Contact Number</label>
    <div class="col-sm-10">
        <input type="text" class="form-control" id="number" name="number" placeholder="0000000000">
    </div>
</div>
<div class="form-group">
    <label for="message" class="col-sm-2 control-label">Message</label>
    <div class="col-sm-10">
        <textarea class="form-control" rows="4" name="message"><?php echo htmlspecialchars($_POST['message']);?></textarea>
    </div>
</div>
<div class="form-group">
    <div class="col-sm-10 col-sm-offset-2">
        <input id="submit" name="submit" type="submit" value="Send" class="btn btn-primary">
    </div>
</div>
<div class="form-group">
    <div class="col-sm-10 col-sm-offset-2">
        <?php echo $result; ?>    
    </div>
</div>

$Tel = Trim(stripslashes($_POST['Tel'])); 
$Email = Trim(stripslashes($_POST['Email'])); 
$Message = Trim(stripslashes($_POST['Message'])); 

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

// prepare email body text
$Body = "";
$Body .= "Name: ";
$Body .= $Name;
$Body .= "\n";
$Body .= "Tel: ";
$Body .= $Tel;
$Body .= "\n";
$Body .= "Email: ";
$Body .= $Email;
$Body .= "\n";
$Body .= "Message: ";
$Body .= $Message;
$Body .= "\n";

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

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

名称
您尚未关闭表单标记，并且在联系人中，没有给出post粘贴此代码和检查的值，并且在使用html5验证时，它将使用占位符设置验证错误消息，如请输入+您的占位符

  <form class="form-horizontal" role="form" method="post" action="index.php">
           <div class="form-group">
        <label for="name" class="col-sm-2 control-label">Name</label>
        <div class="col-sm-10">
            <input type="text" class="form-control" id="name" name="name" placeholder="Preferred Name" value="<?php echo @htmlspecialchars($_POST['name']); ?>">
        </div>
    </div>
    <div class="form-group">
        <label for="email" class="col-sm-2 control-label">Email</label>
        <div class="col-sm-10">
            <input type="email" class="form-control" id="email" name="email" placeholder="example@domain.com" value="<?php echo @htmlspecialchars($_POST['email']); ?>">
        </div>
    </div>
    <div class="form-group">
        <label for="number" class="col-sm-2 control-label">Contact Number</label>
        <div class="col-sm-10">
            <input type="text" class="form-control" id="number" name="number" placeholder="0000000000" value="<?php echo @$_POST['your_contact_filed_name'] ?>">
        </div>
    </div>
    <div class="form-group">
        <label for="message" class="col-sm-2 control-label">Message</label>
        <div class="col-sm-10">
            <textarea class="form-control" rows="4" name="message"><?php echo htmlspecialchars(@$_POST['message']);?></textarea>
        </div>
    </div>
    <div class="form-group">
        <div class="col-sm-10 col-sm-offset-2">
            <input id="submit" name="submit" type="submit" value="Send" class="btn btn-primary">
        </div>
    </div>
    <div class="form-group">
        <div class="col-sm-10 col-sm-offset-2">
            <?php echo @$result; ?>    
        </div>
    </div>
    </form>


名称
$EmailTo和$Subject未设置在我可以看到的脚本中？您好！没有，很抱歉，这是一个复制和粘贴问题，它位于顶部，如下所示：在打开
后立即将错误报告添加到文件的顶部可能重复。表单字段名和$\u POST[]字段名之间存在大量不匹配。例如：$\u POST['Tel']不在您的表单中$_POST['Email']也不是，但是$u POST['Email']是。。。