PHP - Send Email Attachment

email_attachment.php

<?php
function emailAttachment($to, $fromName, $fromEmail, $subject, $message, $files) {
    $headers = "From: $fromName<$fromEmail>";
    // boundary 
    $semi_rand = md5(time()); 
    $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; 
	 
    // headers for attachment 
    $headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\""; 
	 
    // multipart boundary 
    $message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n"; 
    $message .= "--{$mime_boundary}\n";
	 
    // preparing attachments
    for($x=0;$x<count($files);$x++){
	$file = fopen($files[$x],"rb");
	$data = fread($file,filesize($files[$x]));
	fclose($file);
	$data = chunk_split(base64_encode($data));
	$message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$files[$x]\"\n" . "Content-Disposition: attachment;\n" . " filename=\"$files[$x]\"\n" . "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
	$message .= "--{$mime_boundary}\n";
    }
	 
    // send
    $mail_sent = @mail($to, $subject, $message, $headers);		 
    return $mail_sent ? 'SUCCESS' : 'FAILURE';
}
?>