- var_dump: documentation ( source)
- unserialize: documentation ( source)
<?php
$attachments = 'a:1:{i:0;s:42:"/user_files/est_1023/O.A2173.1399391104.rb";}';
$currentAttachments = unserialize($attachments);
foreach ($currentAttachments as $file) {
var_dump($file);
}