// 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 = $pieces[0];
echo "$part
";
}
}