Unity 5 C# login system - www.data return 1 but it keeps going to else?

Question

So I'm trying to make a simple login system in Unity using C#, PHP and MySQL on localhost, but there is a problem. My code works like this:

In the php file, if the username and password matches the ones in the MySQL database, then echo 1. Else echo 0.

In the C# script file in Unity, the problem is in this part of the code:

if (www.error == null) 
    {
        if (www.data == "1") 
        {
            Debug.Log("Successful login/nLoading Scene...");
            StartCoroutine(GoToMenu());
        }
        else
        { 
            Debug.Log("Invalid account or password");
            print(www.url);
            print(www.data);
        }
    }

The problem is that my www.data is returning 1, but it's skipping the condition www.data == "1" and going to else, where it print it's URL (I checked it, it's correct and functional) and it's data (equal to 1).

@mega6382 it returns an error: `Operator '==' cannot be applied to operands of type 'string' and 'int'.` Same to www.text — Ênio José, Jan 22 '16 at 13:54
Try www.data.toString(). Your data is probably an int there. — Izuka, Jan 22 '16 at 13:58
It's very likely the result isn't exactly `"1"`. Try checking the result byte-by-byte, there's probably an end-line or another kind of whitespace in the results. — Luaan, Jan 22 '16 at 14:04
try what Luaan suggests. The best option to check it is to call somethibng like `(www.text.Length == 1)` — Jerry Switalski, Jan 22 '16 at 14:13
@JerrySwitalski and Luaan Thanks you two! I don't know why, but my `www.text.Length` is 2 if my echo is "1". If my echo is "11" my `www.text.Length` is 3 and so on.... If the echo is a int like 0,1,2 or 10, my `www.text.Length` will be 3. My echo doesn't have any white or blank spaces. My original problem is practically solved, but any of you know what this echo/www.text.Length problem really is? — Ênio José, Jan 22 '16 at 16:54
Check my answer, maybe not what you are looking for but always something :) — Jerry Switalski, Jan 22 '16 at 17:26

score 0 · Accepted Answer · edited May 23 '17 at 12:22

0

From your last comment it is obvious that your PHP script is puting special character into the responce string.

The best way would be to ensure that you use same encoding on server and client and not adding the special characters.

But the fastest way to do this is to remove all of them on client side with method like this: (source)

public static string RemoveSpecialCharacters(string str) {
   StringBuilder sb = new StringBuilder();
   foreach (char c in str) {
      if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '.' || c == '_') {
         sb.Append(c);
      }
   }
   return sb.ToString();
}

I am quessing that this special character is "\n"

Maybe this is not what you were looking for, but still it is some solution.

edited May 23 '17 at 12:22

Community

1
1

answered Jan 22 '16 at 17:26

Jerry Switalski

2,690
1
18
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I tried this but my www.text.Length still 2. But you're right about the encoding. I saved my php file as ASCI and UTF-8, and the output on Unity for www.text.Length was 2 and 3 respectively. But using the same format and encoding for the C# and PHP files doesn't output www.text.Length as 1. Oddly, if i use RemoveSpecialCharacters(www.data) instead of www.data or RemoveSpecialCharacters(www.text) the login will succeed even if the Length is > 1. So your answer save my day, thank you so much! – Ênio José Jan 22 '16 at 18:07

score 0 · Answer 2 · edited Aug 26 '16 at 11:51

0

Try this

if (www.text == "1")

Or

if((int)www.text==1)

edited Aug 26 '16 at 11:51

Ahmad

5,551
8
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answered Aug 26 '16 at 10:16

Eugene

151
8

Unity 5 C# login system - www.data return 1 but it keeps going to else?

2 Answers2