收到电子邮件时，PHP表单上未显示消息

我测试了接收自己的电子邮件，出于某种原因，我得到了所有内容，但它没有显示我键入的内容。当我收到它时，它并没有显示实际的信息。有人能帮忙吗？谢谢

      <div class="contact-heading">
      </div>
      <form role="form" class="contact-form" action="contact-us.php" method="post">
        <div class="form-group">
          <label class="" for="exampleInputPassword1">Name</label>
          <input type="text" name="name" class="form-control" id="exampleInputPassword1" placeholder="Name:" required >
        </div>
        <div class="form-group">
          <label class="" for="exampleInputEmail2">Email address</label>
          <input type="email" name="email" class="form-control" id="exampleInputEmail2" placeholder="E-Mail:" required >
        </div>
        <div class="form-group">
          <label class="" for="exampleInputEmail3">Company</label>
          <input type="text" name="company" class="form-control" id="exampleInputEmail3" placeholder="Company:" required >
        </div>
        <div class="form-group">
          <label class="" for="exampleInputEmail4">Message</label>
          <textarea class="form-control textarea" name="message" rows="8" id="exampleInputEmail4" placeholder="Message:"></textarea>
        </div>
        <button type="submit" class="btn btn-submit">Submit</button>
      </form>
    </div>

    <?php 
           $to = 'emailsample@yahoo.com'; 
           $subject  = "Contact us";
$name = stripslashes($_REQUEST['name']); 
$email = stripslashes($_REQUEST['email']); 
$company = stripslashes($_REQUEST['company']); 
$message = stripslashes($_REQUEST['message']); 
$msg .= "Name: ".$name."'r'n";  
$msg .= "E-mail: ".$email."'r'n";  
$msg .= "Company: ".$company."'r'n"; 
$message .= "Topicjk: ".$message."'r'n";  
$msg .= "Subject: ".$subject."'r'n'n"; 
$msg .= "---Message--- 'r'n";
$msg .= "'r'n'n"; 
$mail = @mail($to, $subject, $msg, "From:".$email); 
if($mail) {
header("Location:contact-us.html"); 
} else {
echo 'Message could not be sent! Please try again.';   
}

？>