gistfile1.php

<?php
// Do we have attachments ?
if($attachment !== null) {

	// If its a singular string based attachment we convert it to conform with the generic attachment structure
	if(!is_array($attachment)) {
		$attachment = (array) $attachment;
	}

	// Attach all of our attachments
	foreach($attachment as $att) {

		// If its an array and we have 'title', 'path' then we can add the attachment and rename it.
		if(is_array($att) && isset($att['title'], $att['path'])) {
			$message->attach(
				Swift_Attachment::fromPath($att['path'])->setFilename($att['title'])
			);

		// Standard attach
		} else {
			$message->attach(Swift_Attachment::fromPath($att));
		}
	}
}