如何讓我的html代碼和php聯繫表單文件起作用？

Question

我有問題讓我的contact.php表單工作。之前，我沒有得到消息，我的電子郵件在所有的，現在，電子郵件不會被髮送，這是所有它表明：

From: 
E-mail: 
Message:

這是我的HTML表單：

<form role="form" class="form-alt" action="contact.php" method="post"> 
      <div class="form-group"> 
       <label for="name" class="sr-only">name</label> 
       <input type="text" class="form-control" id="name" placeholder="Name (Required)"> 
      </div> 
      <div class="form-group"> 
       <label for="email" class="sr-only">Email</label> 
       <input type="email" class="form-control" id="email" placeholder="Email (Required)"> 
      </div> 
      <div class="form-group"> 
       <label for="subject" class="sr-only">Subject</label> 
       <input type="text" class="form-control" id="subject" placeholder="Subject"> 
      </div> 
      <div class="form-group"> 
       <label for="message" class="sr-only">message</label> 
       <textarea id="message" class="form-control" cols="30" rows="7" placeholder="Message"></textarea> 
      </div> 
      <button type="submit" class="btn btn-default">Enviar</button> 
     </form> 

     </div> 

這是PHP的聯繫人文件：

<?php 
$field_name = $_POST['cf_name']; 
$field_email = $_POST['cf_email']; 
$field_message = $_POST['cf_message']; 

$mail_to = 'mail@example.com'; 
$subject = 'Message from a site visitor '.$field_name; 

$body_message = 'From: '.$field_name."\n"; 
$body_message .= 'E-mail: '.$field_email."\n"; 
$body_message .= 'Message: '.$field_message; 

$headers = 'From: '.$field_email."\r\n"; 
$headers .= 'Reply-To: '.$field_email."\r\n"; 

$mail_status = mail($mail_to, $subject, $body_message, $headers); 

if ($mail_status) { ?> 
    <script language="javascript" type="text/javascript"> 
     alert('Thank you for the message. We will contact you shortly.'); 
     window.location = 'contact_page.html'; 
    </script> 
<?php 
} 
else { ?> 
    <script language="javascript" type="text/javascript"> 
     alert('Message failed. Please, send an email to gordon@template-help.com'); 
     window.location = 'contact_page.html'; 
    </script> 
<?php 
} 
?> 

Answer 1

你需要給每個表單元素的名稱屬性。例如：

<input type="email" class="form-control" id="email" placeholder="Email (Required)"> 

應該是：

<input type="email" name="cf_email" class="form-control" id="email" placeholder="Email (Required)"> 

您的代碼，例如$field_email = $_POST['cf_email'];正在尋找名稱爲cf_email的輸入元素。沒有它，你會得到一個空白值。