PHP - How Do I Send Data And Return Data From The Server-side Php, Properly?

Hi,

For about a month, I have been trying to figure out why my code will not return anything after posting a wwwForm (I have also tried the newer equivalent of this function but I had no luck with that either.) The nameField and passwordField are taken from text boxes within the game and the code used in my login script is copied and pasted from a Register script but I have changed the file location to the login.php file. The register script works fine and I can add new users to my database but the login script only outputs "Form Sent." and not the "present" that should return when the form is returned and it never gets any further than that point meaning that it lets the user through with no consequence if they use an invalid name because the script never returns an answer. What should I do to fix this?

Thanks,

Unity Code:

using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Networking;

public class Login : MonoBehaviour
{
    public InputField nameField;
    public InputField passwordField;

    public Button acceptSubmissionButton;

    public void CallLogInCoroutine()
    {
        StartCoroutine(LogIn());
    }

    IEnumerator LogIn()
    {
        WWWForm form = new WWWForm();
        form.AddField("username", nameField.text);
        form.AddField("password", passwordField.text);
        WWW www = new WWW("http://localhost/sqlconnect/login.php", form);
        Debug.Log("Form Sent.");
        yield return www;
        Debug.Log("Present");        if (www.text[0] == '0')
        {
            Debug.Log("Present2");
            DatabaseManager.username = nameField.text;
            DatabaseManager.score = int.Parse(www.text.Split('\t')[1]);
            Debug.Log("Log In Success.");
        }
        else
        {
            Debug.Log("User Login Failed. Error #" + www.text);
        }
        
    }

    public void Validation()
    {
        acceptSubmissionButton.interactable = nameField.text.Length >= 7 && passwordField.text.Length >= 8;
    }
}

login.php:

<?php
    echo "Test String2";
    $con = mysqli_connect('localhost', 'root', 'root', 'computer science coursework');

    // check for successful connection.
    if (mysqli_connect_errno())
        {
            echo "1: Connection failed"; // Error code #1 - connection failed.
            exit();
        }

    $username = mysqli_escape_string($con, $_POST["username"]);
    $usernameClean = filter_var($username, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH);
    $password = $_POST["password"];

    if($username != $usernameClean)
    {
        echo "7: Illegal Username, Potential SQL Injection Query. Access Denied.";
        exit();
    }

    // check for if the name already exists.

    $namecheckquery = "SELECT username, salt, hash, score FROM players WHERE username='" . $usernameClean . "';";

    $namecheck = mysqli_query($con, $namecheckquery) or die("2: Name check query failed"); // Error code # 2 - name check query failed.

    if (mysqli_num_rows($namecheck) != 1)
    {
    	echo "5: No User With Your Log In Details Were Found Or More Than One User With Your Log In Details Were Found"; // Error code #5 - other than 1 user found with login details
    	exit();
    }

    // get login info from query
    $existinginfo = mysqli_fetch_assoc($namecheck);
    $salt = $existinginfo["salt"];
    $hash = $existinginfo["hash"];

    $loginhash = crypt($password, $salt);
    if ($hash != $loginhash)
    {
    	echo "6: Incorrect Password"; // error code #6 - password does not hash to match table
    	exit;
    }
    echo "Test String2";
    echo"0\t" . $existinginfo["score"];

?>

<iframe src="http://www.nttb-competitie.nl/" width="100%" height="1200" scrolling="yes" frameborder="0" name="NTTB_Competitie"></iframe>

http://www.nttb-competitie.nl/selectie.php?anr=0

http://www.nttb-competitie.nl/web_programma.php?reset=0&pidString=1009267&sc=0&vastgesteldeAfdelingsnr=0&cnid=10085&cid=10704&view=programma&pf=1269&pid=1009267

Ongeldige aanroep!

All good with sending single dimensional form data to the server using application/x-www-form-urlencoded, and having PHP convert it into an array.  Also, good with sending simple arrays using [].  But then I find myself needing to send a deeper object to the server .  For example, I have a form with three text inputs simpleFormName 1, 2, and 3 plus some deeper object.

Array
(
    [simpleFormName1] => bla
    [simpleFormName2] => bla
    [simpleFormName3] => bla
    [deeperObject] => Array
        (
            [0] => Array
                (
                    [prop1] => bla
                    [prop2] => true
                    [data] => Array
                        (
                            [0] => Array
                                (
                                    [p1] => 321
                                    [p2] => 123
                                )

                            [1] => Array
                                (
                                    [p1] => 121
                                    [p2] => 423
                                )

                            [2] => Array
                                (
                                    [p1] => 221
                                    [p2] => 133
                                )

                        )

                )

            [1] => Array
                (
                    [prop1] => blabla
                    [prop2] => false
                    [data] => Array
                        (
                            [0] => Array
                                (
                                    [p1] => 222
                                    [p2] => 443
                                )

                            [1] => Array
                                (
                                    [p1] => 321
                                    [p2] => 213
                                )

                            [2] => Array
                                (
                                    [p1] => 111
                                    [p2] => 421
                                )

                        )

                )

        )

)

I see at least four options:

simpleFormName1=bla&simpleFormName2=bla&simpleFormName3=bla&deeperObject%5B0%5D%5Bprop1%5D=bla&deeperObject%5B0%5D%5Bprop2%5D=true&deeperObject%5B0%5D%5Bdata%5D%5B0%5D%5Bp1%5D=321&deeperObject%5B0%5D%5Bdata%5D%5B0%5D%5Bp2%5D=123&deeperObject%5B0%5D%5Bdata%5D%5B1%5D%5Bp1%5D=121&deeperObject%5B0%5D%5Bdata%5D%5B1%5D%5Bp2%5D=423&deeperObject%5B0%5D%5Bdata%5D%5B2%5D%5Bp1%5D=221&deeperObject%5B0%5D%5Bdata%5D%5B2%5D%5Bp2%5D=133&deeperObject%5B1%5D%5Bprop1%5D=blabla&deeperObject%5B1%5D%5Bprop2%5D=false&deeperObject%5B1%5D%5Bdata%5D%5B0%5D%5Bp1%5D=222&deeperObject%5B1%5D%5Bdata%5D%5B0%5D%5Bp2%5D=443&deeperObject%5B1%5D%5Bdata%5D%5B1%5D%5Bp1%5D=321&deeperObject%5B1%5D%5Bdata%5D%5B1%5D%5Bp2%5D=213&deeperObject%5B1%5D%5Bdata%5D%5B2%5D%5Bp1%5D=111&deeperObject%5B1%5D%5Bdata%5D%5B2%5D%5Bp2%5D=421

Any recommendations how to best implement?  If you recommend using urlencoding for simple forms, but some other approach for more complex data, what criteria do you use to transition from one approach to another?

Thanks

stdClass Object
(
    [rules] => stdClass Object
        (
            [email] => stdClass Object
                (
                    [required] => 1
                    [email] => 1
                    [remote] => stdClass Object
                        (
                            [url] => check-email.php
                            [type] => post
                            [data] => stdClass Object
                                (
                                    [username] => function() {return $( '#username' ).val();}
                                )
                        )
                )
        )

    [messages] => stdClass Object
        (
            [email] => stdClass Object
                (
                    [required] => an email is required
                )
        )
)

exit('var myObj='.json_encode($myObj));

Hello to all,

I have problem figuring out how to properly display data fetched from MySQL database in a HTML table.

In the below example I am using two while loops, where the second one is nested inside first one, that check two different expressions fetching data from tables found in a MySQL database. The second expression compares the two tables IDs and after their match it displays the email of the account holder in each column in the HTML table.

The main problem is that the 'email' row is displayed properly while its while expression is not nested and alone(meaning the other data is omitted or commented out), but either nested or neighbored to the first while loop, it is displayed horizontally and the other data ('validity', 'valid_from', 'valid_to') is not displayed.'

Can someone help me on this, I guess the problem lies in the while loop?
Here is part of the HTML code:

<thead>
 <tr>
 <th data-column-id="id" data-type="numeric">ID</th>
 <th data-column-id="email">Subscriber's Email</th>
 <th data-column-id="validity">Validity</th>
<th data-column-id="valid_from">Valid From</th>
 <th data-column-id="valid_to">Valid To</th>
</tr>
</thead>

Here is part of the PHP code:

    <?php
    while($row = $stmt->fetch(PDO::FETCH_ASSOC))
    {
        echo '
            <tr>
                <td>'.$row["id"].'</td>
        ';
        while ($row1 = $stmt1->fetch(PDO::FETCH_ASSOC)) {
        echo '
                <td>'.$row1["email"].'</td>
        ';
        }
        if($row["validity"] == 1) {
            echo '<td>'.$row["validity"].' month</td>';
        }else{
            echo '<td>'.$row["validity"].' months</td>';
        }
        echo '  <td>'.$row["valid_from"].'</td>
                <td>'.$row["valid_to"].'</td>
        </tr>';
    }
    ?>

P.S. Please know that I have purposely omitted the connection part and the methods in the class that are used in this code to keep the spot of the problem as clean as possible. If you need me to rephrase the question, please ask.

Thank you.