function encodeUTF8($array)
{
foreach ($array as $key => $value) {
if (!is_array($value)) {
$array[$key] = mb_convert_encoding($value, "UTF-8", "GBK");
} else {
encodeUTF8($array[$key]);
}
}
return $array;
}
function encodeBase64($str)
{
$i = 0;
$enc = '';
$str = encodeUTF8($str);
// encode multi-byte chars into UTF-8 for byte-array
do {
// pack three octets into four hexets
$o1 = ord($str[$i++]);
$o2 = ord($str[$i++]);
$o3 = ord($str[$i++]);
$bits = $o1 << 16 | $o2 << 8 | $o3;
$h1 = $bits >> 18 & 0x3f;
$h2 = $bits >> 12 & 0x3f;
$h3 = $bits >> 6 & 0x3f;
$h4 = $bits & 0x3f;
// end of string? index to '=' in b64
if (is_nan($o3)) {
$h4 = 64;
}
if (is_nan($o2)) {
$h3 = 64;
}
// use hexets to index into b64, and append result to encoded string
$enc += $b64[$h1] + $b64[$h2] + $b64[$h3] + $b64[$h4];
} while ($i < strlen($str));
return $enc;
}
