Used to encode a field for Auth #hex2b64 #php

hex2b64

function hex2b64($str)
{
    $raw = '';
    for ($i = 0; $i < strlen($str); $i += 2) {
        $raw .= chr(hexdec(substr($str, $i, 2)));
    }
    return base64_encode($raw);
}

/*
Example:
$signature = hex2b64(hash_hmac('sha1', $data, $secret_key));
*/