Upload File – Send HTML Format Email with Attachment Using PHP

    <form name="filepost" method="post" action="file.php" enctype="multipart/form-data" id="file">
    <table width="300" border="0" cellspacing="0" cellpadding="0">
      <tr valign="bottom">
        <td height="20">Your Name:</td>
      </tr>
      <tr>
        <td><input name="from" type="text" id="from" size="30"></td>
      </tr>
      <tr valign="bottom">
        <td height="20">Your Email Address:</td>
      </tr>
      <tr>
        <td class="frmtxt2"><input name="emaila" type="text" id="emaila" size="30"></td>
      </tr>
      <tr>
        <td height="20" valign="bottom">RFQ File:</td>
      </tr>
      <tr valign="bottom">
        <td valign="bottom"><input name="filea" type="file" id="filea" size="16"></td>
      </tr>
      <tr>
        <td height="40" valign="middle"><input name="Reset2" type="reset" id="Reset2" value="Reset">
            <input name="Submit2" type="submit" value="Submit" onClick="return CheckData45()"></td>
      </tr>
    </table>
    </form>

<?php
 
// request variables
$from=$_REQUEST["from"];
$emaila=$_REQUEST["emaila"];
$filea=$_REQUEST["filea"];
 
if ($filea)
{
function mail_attachment ($from , $to, $subject, $message, $attachment){
	$fileatt = $attachment; // Path to the file
	$fileatt_type = "application/octet-stream"; // File Type
    $start=	strrpos($attachment, '/') == -1 ? strrpos($attachment, '//') : strrpos($attachment, '/')+1;
	$fileatt_name = substr($attachment, $start, strlen($attachment)); // Filename that will be used for the file as the attachment
 
	$email_from = $from; // Who the email is from
    $subject = "New Attachment Message";
	$email_subject =  $subject; // The Subject of the email
	$email_txt = $message; // Message that the email has in it
 
	$email_to = $to; // Who the email is to
 
	$headers = "From: ".$email_from;
 
	$file = fopen($fileatt,'rb');
	$data = fread($file,filesize($fileatt));
	fclose($file);
	$msg_txt="\n\n You have recieved a new attachment message from $from";
	$semi_rand = md5(time());
	$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
	$headers .= "\nMIME-Version: 1.0\n" .
            "Content-Type: multipart/mixed;\n" .
            " boundary=\"{$mime_boundary}\"";
	$email_txt .= $msg_txt;
	$email_message .= "This is a multi-part message in MIME format.\n\n" .
                "--{$mime_boundary}\n" .
                "Content-Type:text/html; charset=\"iso-8859-1\"\n" .
               "Content-Transfer-Encoding: 7bit\n\n" .
	$email_txt . "\n\n";
	$data = chunk_split(base64_encode($data));
	$email_message .= "--{$mime_boundary}\n" .
                  "Content-Type: {$fileatt_type};\n" .
                  " name=\"{$fileatt_name}\"\n" .
                  //"Content-Disposition: attachment;\n" .
                  //" filename=\"{$fileatt_name}\"\n" .
                  "Content-Transfer-Encoding: base64\n\n" .
                 $data . "\n\n" .
                  "--{$mime_boundary}--\n";
 
	$ok = mail($email_to, $email_subject, $email_message, $headers);
 
	if($ok)
	{
	echo "File Sent Successfully.";
	unlink($attachment); // delete a file after attachment sent.
	}
	else
	{
		die("Sorry but the email could not be sent. Please go back and try again!");
	}
}
 
move_uploaded_file($_FILES["filea"]["tmp_name"],'temp/'.basename($_FILES['filea']['name']));
mail_attachment("$from", "youremailaddress@gmail.com", "subject", "message", ("temp/".$_FILES["filea"]["name"]));
}
?>