我应该将我的HTML表单代码粘贴到Joomla的什么地方

我在joomla工作，我有一个custom contact form我已经在html code中创建了它，当用户单击submit按钮时我应该将所有文本框值email给我。

所以我为此写php code。

例如只有两个字段在 HTML 代码中在PHP代码中，如下所示

<?php
if(isset($_POST['email'])) {

    $email_to = "test@gmail.com";
    $email_subject = "mail";

    function died($error) {
        // your error code can go here
        echo "We are very sorry, but there were error(s) found with the form you submitted. ";
        echo "These errors appear below.<br /><br />";
        echo $error."<br /><br />";
        echo "Please go back and fix these errors.<br /><br />";
        die();
    }
    // add  validation for other fields if needed 
    if(!isset($_POST['Applicant_name']) ||
        !isset($_POST['email']))) {
        died('We are sorry, but there appears to be a problem with the form you submitted.');       
    }
     //all fields with there name to send in email
    $name = $_POST['name']; // required
    $email= $_POST['email']; // required

    $error_message = "";
  if(strlen($error_message) > 0) {
    died($error_message);
  }
    $email_message = "Form details below.'n'n";
    function clean_string($string) {
      $bad = array("content-type","bcc:","to:","cc:","href");
      return str_replace($bad,"",$string);
    }
     //show all fields in message body
    $email_message .= "Applicant_name: ".clean_string($Applicant_name)."'n";
    $email_message .= "name: ".clean_string($dob)."'n";
    $email_message .= "email: ".clean_string($sex)."'n";
// create email headers
$headers = 'From: '.$email_from."'r'n".
'Reply-To: '.$email_from."'r'n" .
'X-Mailer: PHP/' . phpversion();
@mail($email_to, $email_subject, $email_message, $headers);  
?>
Thank you for contacting us. We will be in touch with you very soon.
<?php
}
?>

我需要在哪里以及如何将此代码粘贴到 Joomla 中？