php表单不会发送电子邮件

Question

我的联系表格不会发送电子邮件。我对表单控件不太熟悉，因此可能是导致问题的原因。当我提交表单时，没有错误消息。谢谢你的时间。有了php，我尝试在邮件功能之前添加并删除'@'，没有运气。

以下是html表单的代码：

<div class="contact-form">
                    <h2>Contact Us</h2>
                    <form method="post" action="contactsent.php">
                        <div>
                            <span>name</span>
                            <span><input type="username" class="form-control" id="name"></span>
                        </div>
                        <div>
                            <span>e-mail</span>
                            <span><input type="email" class="form-control" id="email"></span>
                        </div>
                        <div>
                            <span>message</span>
                            <span>
                            <textarea name="userMsg"> </textarea>
                            </span>
                            </div>

                         <div>
                            <label class="fa-btn btn-1 btn-1e"><input type="submit" value="Send"></label>
                      </div>
                    </form>
                </div>
        </div>      
        <div class="clearfix"></div>        
</div> 

这是php文件（contactsent.php）（我已删除了我的电子邮件）：

$email_to = "[myname@domain.com]";
$email_subject = "Contact form email";

function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}


if(isset($_POST['email'])) {

 $name = test_input($_POST["name"]);   
$email = test_input($_POST["email"]);
$message = test_input($_POST["usrMsg"]);

$email_message .= "Name: ".clean_string($name)."\n";
$email_message .= "Email: ".clean_string($email)."\n";
$email_message .= "Message: ".clean_string($message)."\n";

 ini_set('display_errors', 'on');

 // create email headers
 $headers = 'From: '.$email."\r\n".
'Reply-To: '.$email."\r\n" .
'X-Mailer: PHP/' . phpversion();
 mail($email_to, $email_subject, $email_message, $headers); 


 }
 ?>

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Thanks!