function _password_base64_encode

Encodes bytes into printable base 64 using the *nix standard from crypt().

Parameters

$input: The string containing bytes to encode.

$count: The number of characters (bytes) to encode.

Return value

Encoded string

File

includes/password.inc, line 56

Code

function _password_base64_encode($input, $count) {
    $output = '';
    $i = 0;
    $itoa64 = _password_itoa64();
    do {
        $value = ord($input[$i++]);
        $output .= $itoa64[$value & 0x3f];
        if ($i < $count) {
            $value |= ord($input[$i]) << 8;
        }
        $output .= $itoa64[$value >> 6 & 0x3f];
        if ($i++ >= $count) {
            break;
        }
        if ($i < $count) {
            $value |= ord($input[$i]) << 16;
        }
        $output .= $itoa64[$value >> 12 & 0x3f];
        if ($i++ >= $count) {
            break;
        }
        $output .= $itoa64[$value >> 18 & 0x3f];
    } while ($i < $count);
    return $output;
}