使用PHP发送电子邮件时如何删除附件上的回形针

I have another question. I've created a php mail and I want to remove the paper clip attachment since I dont have any attachment to send but when I checked my email it has a paper click attachment. is there a way to remove it? Im using php mail. Thank You

I've comment the attachment part since I'm not using it but it still doesnt work.

Here is my code:

<?php
    /* Set e-mail recipient */
    $myemail = "test@yahoo.com";



    //*** Get values form fields ***//
    $contact = $_POST['contact'];
    $strtitle = $_POST["txtSubject"];
    $type = $_POST['type'];
    $message = $_POST['textarea'];
    $message = wordwrap($message, 70);

    $message = "

                    <b> Contact No:</b>  $contact <br><br>


                        <b>Description:</b><br>
                        $message <br><br>

                        <b>Type</b> : $type


                ";

    //*** Uniqid Session ***//
    $strSid = md5(uniqid(time()));

    $strHeader = "";

    $strHeader .= "MIME-Version: 1.0
";
    $strHeader .= "Content-Type: multipart/mixed; boundary=\"".$strSid."\"

";
    $strHeader .= "This is a multi-part message in MIME format.
";

    $strHeader .= "--".$strSid."
";
    $strHeader .= "Content-type: text/html; charset=utf-8
";
    $strHeader .= "Content-Transfer-Encoding: 7bit

";
    $strHeader .= $message."

";





    //*** Attachment ***//

    // if($_FILES["fileAttach"]["name"] != "")
    // {
        // $strFilesName = $_FILES["fileAttach"]["name"];
        // $strFileName = ($_FILES["fileAttach"]["size"]  < 1000000);
        // $strContent = chunk_split(base64_encode(file_get_contents($_FILES["fileAttach"]["tmp_name"]))); 
        // $strHeader .= "--".$strSid."
";
        // $strHeader .= "Content-Type: application/octet-stream; name=\"".$strFilesName."\"
"; 
        // $strHeader .= "Content-Transfer-Encoding: base64
";
        // $strHeader .= "Content-Disposition: attachment; filename=\"".$strFilesName."\"

";

         // $strHeader .= $strContent."

";
    // }


    $flgSend = @mail($myemail,$strtitle,null,$strHeader);  // @ = No Show Error //

    if($flgSend)
    {
        echo "<script type='text/javascript'>
                                    alert('Report Successfully Sent');window.location.href='Test2.php';
                                </script>"; 

        // echo "Size: " . ($_FILES["fileAttach"]["size"]);

    }
    else

    //Alert when Cannot connect to server
    {
        echo "<script type='text/javascript'>
                                    alert('Report Failed to Send : Server Connection Timed Out');window.location.href='Test2.php';
                                </script>";

        // echo "Size Failed: " . ($_FILES["fileAttach"]["size"]);

    }


exit();







?>

This should do it:

$strHeader = "";

$strHeader .= "MIME-Version: 1.0
";

$strHeader .= "Content-type: text/html; charset=utf-8
";
$strHeader .= "Content-Transfer-Encoding: 7bit

";
$strHeader .= $message."

";