Email formulier met bijlage

<?php
//mail formulier voor bijlage
$email ='[email protected]';
//geneer boundary
DEFINE('bound',md5(uniqid(time())));
//check request method

	if($_SERVER['REQUEST_METHOD'] == 'POST')
	{
		 //if file upload send with email as mixed
 		if(!empty($_FILES['file']['name']))
 		{
			//check filesize
 			if($_FILES['file']['size'] < 1024*50)
 			{
  				$headers = "From: ".$_POST['from']." <".$_POST['email'].">\r\n";
				$headers .= "Reply-To: ".$_POST['from']." <".$_POST['email'].">\r\n";
   				$headers .= "MIME-Version: 1.0\r\n";
   				//email bestaat uit meerdere  bestanden dus vertel wat de scheidings teken is en dat het een multipart is
   				$headers .= "Content-Type: multipart/mixed; boundary=\"".bound."\"\r\n";
   				//we zenden een attachment mee
   				$headers .= "Content-Disposition:  attachment\r\n";
   				//readfile
   				$fp = fopen($_FILES['file']['tmp_name'],'r');
   				$bestand = fread($fp,$_FILES['file']['size']);
   				fclose($fp);
   				//create body
   				//generenen een body. Dit is een multi part gezeik
   				$body.= "This is a multi-part message in MIME format.\r\n";
   				$body.= "\r\n";
				//boundary
				$body.= "--".bound."\r\n";
				//content type + charater set (iso in dit geval)
				$body.= "Content-Type: text/plain; charset=iso-8859-1\r\n";
				//codering (7 bit)
				$body.= "Content-Transfer-Encoding: 7bit\r\n";
				$body.= "\r\n";
				//het bericht
				$body.= $_POST['bericht'] ."\r\n";
				//boundary
				$body.= "--".bound."\r\n";
				//content type + naam bestand (database.sql)
				$body .= "Content-Type: application/octet-stream; name=".$_FILES['file']['name']."\r\n";
				//codering
				$body .= "Content-Transfer-Encoding: base64\r\n";
				//als bijlage toegevoegd
				$body.= "Content-disposition: attachment\r\n";
				$body .= "\n";
				//de inhoud van het bestand
				$body .= chunk_split(base64_encode($bestand )) . "\r\n";
				mail($email,$_POST['subject'],$body,$headers);
				echo 'Email (Met een bijlage) is verzonden';
			}
			else
			{
 				echo 'Bestands groote is te groot';
 			}
		}
		else
		{
			$headers = "From: ".$_POST['from']." <".$_POST['email'].">\r\n";
   			$headers .= "Reply-To: ".$_POST['from']." <".$_POST['email'].">\r\n";
   			$headers .= "MIME-Version: 1.0\r\n";
   			$bericht = $_POST['bericht'];
   			mail($email,$_POST['subject'],$bericht,$headers);
   			echo 'Email (Zonder een bijlage) is verzonden';
 		}
 	}
 	else
 	{
		//mail formulier je moet zelf het fomullier maken

		echo "<form action=\"" . $_SERVER['PHP_SELF'] . "\" method=\"POST\" enctype=\"multipart/form-data\">";
 		echo "Naam: <input type='text' name='from'><br>";
 		echo "Email:<input type='text' name='email'><br>";
 		echo "Onderwerp:<input type='text' name='subject'><br>";
 		echo "Bestand:<input type='file' name='file'><br>";
 		echo "Bericht:<textarea name='bericht'></textarea><br />";
		echo "<input type=\"submit\" value=\"Verzenden\">";
	}
?>