Question

I converting a swf project to php, I’m not good with actionscript much so I need help to convert functions Hex.toArray, Hex.fromString, Base64.encodeByteArray in actionscript3 to php.

ActionScript

public function spawn(query_str:String, key:String, token:String = "") : String{
    var tmp1:* = key + "&" + token;
    var tmp2:* = Crypto.getHMAC("sha1");
    var tmp3:* = Hex.toArray(Hex.fromString(tmp1));
    var tmp4:* = Hex.toArray(Hex.fromString(query_str));
    var tmp5:* = tmp2.compute(tmp3, tmp4);
    return Base64.encodeByteArray(tmp5);
}

This is PHP function I converted, but results of two functions are different

function spawn($query_str, $key, $token = ''){
    $tmp1 = $key . "&" . $token;
    $tmp3 = pack("H*" , bin2hex($tmp1));
    $tmp4 = pack("H*" , bin2hex($query_str));
    $tmp5 = hash_hmac('sha1', $tmp4, $tmp3);
    return base64_encode($tmp5);
}

Answer 1

You can use bin2hex in PHP, and pack("H*", ...) in lieu of hex2bin. The primarily used base64 functions in PHP are base64_encode and base64_decode.

Arrays are seldomly used for data representation; binary data is generally kept in strings in PHP. But if really needed $array = array_map("ord", str_split($string)); would do.