YA: mail() with file attachment

<?php
/*
    answer for: http://answers.yahoo.com/question/?qid=20110623172100AAOSnDt
*/

/*
*        Functions
*/
function cleanPost(){ // Gets the information from the $_POST variables, cleans them, then sends them back
    $a = func_get_args();
    $c = func_num_args();
    $m = get_magic_quotes_gpc();
    $r = Array();
    if($c > 0){
        for($i=0;$i<$c;++$i){
            $r[] = str_replace(',','&#44;',(($m)? stripslashes($_POST[$a[$i]]) : $_POST[$a[$i]]));
        }
        return $r;
    }
    return false;
}
function mail_attachment($mailto, $subject, $message,$file) {
    // Modified From http://www.finalwebsites.com/forums/topic/php-e-mail-attachment-script  Olafs Example
    // Good for only one file at a time.
    $fh = fopen($file, "r");
    $content = chunk_split( base64_encode( fread($fh, filesize( $file ))));
    fclose($fh);
    $uid = uniqid(time(),true);
    $filename = basename($file);
    $header = "From: Website Form <form@website.com>\r\n";
    $header .= "MIME-Version: 1.0\r\n";
    $header .= "Content-Type: multipart/mixed; boundary=\"{$uid}\"\r\n\r\n";
    $header .= "This is a multi-part message in MIME format.\r\n";
    $header .= "--{$uid}\r\n";
    $header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
    $header .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
    $header .= "{$message}\r\n\r\n";
    $header .= "--{$uid}\r\n";
    $header .= "Content-Type: text/csv; name=\"{$filename}\"\r\n"; // use different content types here
    $header .= "Content-Transfer-Encoding: base64\r\n";
    $header .= "Content-Disposition: attachment; filename=\"{$filename}\"\r\n\r\n";
    $header .= $content."\r\n\r\n";
    $header .= "--".$uid."--";
    return mail($mailto, $subject, "", $header);
}

/*
*        Variables
*/
list($surname,$middlename,$forename,$type,$area) = cleanPost('surname','middlename','forename','type','area'); // Will take $_POST[name] for each supplied name and create the same variable. So similar to writing $surname = $_POST['surname']; But easier and quicker.
$tempFilename = "{$forename} {$middlename} {$surname}.csv";
$tempFile = tempnam("/tmp", $tempFilename);
$fileContents = "{$surname},{$middlename},{$forename},{$type},{$area}" . PHP_EOL;
$email = Array(
    'recipient' => 'membership_secretary@company.com', // The Email Address of the recipient
    'subject' => 'New Application For Membership', // Subject Line
    'message' => 'Info For New Applicant' . PHP_EOL . $fileContents // Email Message Body
);

/*
*        Temp File Creation & Population
*/

$fh = fopen($tempFile,'w') or die('Couldn\'t create Temp file');
fwrite($fh,$fileContents) or die('Couldn\'t write data to Temp file');
fclose($fh) or die('Couldn\'t Close Temp File');

/*
*        Mail Sending
*/

if( mail_attachment($email['recipient'], $email['subject'], $email['message'],$tempFile)){
    // Email Was Successful
    echo 'Email Sent';
}else{
    // Email Failled
    echo 'Email Error. Email was not sent';
}
?>