Send C# array to PHP web service using post

Question

I am trying to send this array string[] str = { "abc" , "sdfsdf" }; value to PHP (web service) using the code below but it is always giving me the following output

In the PHP file I have the following code which actually receives the array and output the total structure with values:

<?php    
  $messages = $_POST['messages'];
  print_r($messages);
?>

Probably the problem is PHP is unable to read the array I am sending; may be because I am sending it from C#.

Could you please tell me how to send the array properly so that the PHP web service can read this.

FYI: I don't have the authority to edit any code in the web service end.

My Full C# Code

string[] str = { "num" ,  "Hello World" };

string url = "http://localhost/a/cash.php";

HttpWebRequest httpWReq = (HttpWebRequest)WebRequest.Create( url );

ASCIIEncoding encoding = new ASCIIEncoding();

string postData ;//= "keyword=moneky";
       postData = "&messages[]=" + str;

byte[] data = encoding.GetBytes(postData);

httpWReq.Method = "POST";
httpWReq.ContentType = "application/x-www-form-urlencoded";
httpWReq.ContentLength = data.Length;

  using (Stream stream = httpWReq.GetRequestStream())
        {
            stream.Write(data, 0, data.Length);
        }

HttpWebResponse response = (HttpWebResponse)httpWReq.GetResponse();

string responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();

MessageBox.Show(responseString);

Answer 1

I have finally found the right solution myself after lots of trial and error. Here's the code in case if somebody needs:

I had to use dictionary:

Dictionary<string, string> myarray =
    new Dictionary<string, string>();

    myarray .Add("0", "Number1");
    myarray .Add("1", "Hello World");

And then

string str = string.Join(Environment.NewLine, myarray); 

Then my rest of the codes :

string url = "http://localhost/a/cash.php";

HttpWebRequest httpWReq = (HttpWebRequest)WebRequest.Create( url );

ASCIIEncoding encoding = new ASCIIEncoding();

 string postData = "keyword=moneky";
        postData += "&messages[]=" + str;

 byte[] data = encoding.GetBytes(postData);

 httpWReq.Method = "POST";
 httpWReq.ContentType = "application/x-www-form-urlencoded";
 httpWReq.ContentLength = data.Length;

 using (Stream stream = httpWReq.GetRequestStream())
    {
        stream.Write(data, 0, data.Length);
    }

HttpWebResponse response = (HttpWebResponse)httpWReq.GetResponse();

string responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();

MessageBox.Show(responseString);

Answer 2

Edit your C# code:

Old code

string postData ;//= "keyword=moneky";
postData = "&messages[]=" + str;

New code

string postData = "";
foreach (string oneString in str) {
   postData += "messages[]=" + oneString + "&";
}