Simple php script to base64 encode file

base64.php

<?php
if(count($argv) < 3) {
    die("php base64 <input filename> <output filename>\n");
}
$input = $argv[1];
$output = $argv[2];

$file_content = file_get_contents($input);
$encoded = base64_encode($file_content);
return file_put_contents($output, $encoded);
?>