Unable to get Data from MySQL using PHP

Question

I have an online database on my server, where each username is assigned a primary key id. I want to get this id from the table with the help of PHP. The code is as follows: `

<?php
   $servername = "uk9.siteground.eu";
   $username = "****";
   $password = "****";
   $dbname = "****";
   $tablename = "Account";
   $user = $_REQUEST["LoggedInUser"];
   // Create connection
   $conn = mysqli_connect($servername, $username, $password, $dbname);
   // Check connection
   if (!$conn) {
      die("Connection failed: " . mysqli_connect_error());
   }
   $sql = "SELECT id
           FROM $tablename
           WHERE 'username' LIKE '$user'";

   $result = $conn->query($sql)->fetch_object()->id;
   echo $result;
   mysqli_close($conn);
?>

`

The PHP script works when I use it through my browser, where it prints the correct id number. However, when I call this PHP through Unity: `

public string username;
public string userID;

private void Start()
{
    username = "example";
    StartCoroutine(GetUID());
}

IEnumerator GetUID()
{
    string url = "****";
    WWWForm form = new WWWForm();
    form.AddField("LoggedInUser", username);
    WWW wwwResponse = new WWW(url, form);
    Debug.Log("Connecting to PHP");
    yield return wwwResponse;
    if (wwwResponse.error != null)
    Debug.Log(wwwResponse.error);
    else
    Debug.Log("No Error" + wwwResponse.text);
    userID = wwwResponse.text;
    Debug.Log(userID);
}

` The code reaches the point "Connecting to PHP", but does not print anything after that in the console.

Can anyone help me out with this issue? Thanks

Answer 1

move

yield return wwwResponse; 

to the bottom of your code.

Example:

IEnumerator GetUID() {

    string url = "****";
    WWWForm form = new WWWForm();
    form.AddField("LoggedInUser", username);
    WWW wwwResponse = new WWW(url, form);

    //wait till backend responses your request
    while(!wwwResponse.isDone) {
        yield return null; //skip frame
    }

    // keep going when you got your response 
    if(wwwResponse.error != null) {
        Debug.Log(wwwResponse.error);
    } else {
        Debug.Log("No Error" + wwwResponse.text);
        userID = wwwResponse.text;
        Debug.Log(userID);
    }

    yield return wwwResponse;
}