Mine

// MIME body contained in $input
file_put_contents("attachments/body.eml",$input);
$command = "munpack -C attachments -fq body.eml";
exec($command,$output);
if($output[0]!='Did not find anything to unpack from attachments/body.eml') {
	foreach ($output as $attach) {
		$pieces = explode(" ", $attach);
		$part = $pieces[0];
		echo "<a href=\"attachments/$part\">$part</a><br>";
		}
	}