This post was published 2 years, 3 months ago. Due to the rapidly evolving world of technology, some concepts may no longer be applicable.
I had a few files containing email attachments that needed to be converted into usable files. The following code (which has no checks in it), did the trick:
<?php
function decode_email_attachment(){
$data= file_get_contents($inputfile);
file_put_contents($outputfile, base64_decode(str_replace( "\r\n", "", $data )));
}
?>