Base64 fwrite using php

Question

I want to use fwrite to post $username in base64 encoded Here is my current source

$fp = fopen(\"id.txt\", \"a\");
fwrite($fp, \" $username\\r\\n\");
fclose($fp         


        

Answer 1

I assume you want to store it encoded, use base64_encode.

fwrite($fp, base64_encode($username));