Creating Dynamic Pages with php and MySQL - php

Question

I am creating a list of links in main.php using "donemler" table in mySQL database and would like to create a page that shows data from "sikkeler" table (which has a foreing key donemID that is used as a relationship between the two tables) as the user clicks it. (data.php is a part of the index.php which is a infinite scroll page)
Here I tried to call $row["donemID"] with GET method using
$k=$_GET['donemID'] in index.php but did not work.
I have also tried to use SESSIONS method where I add "$_SESSION['donemID']=$row$row["donemID"] to main.php
and called it back in index.php as
$k=$_SESSION['donemID']
but it also did not work.
I would like to learn how to create pages and show relevant data in php.
Thanks in advance!
main.php
<?php
require_once "config.php";
$sql = $conn->query("SELECT * FROM donemler ORDER BY donemID");
if ($sql->num_rows > 0) {
// output data of each row
while($row = $sql->fetch_assoc()) {
echo "<tr><td><a href='index.php?devletID=".$row["devletID"]."&donemID=".$row["donemID"]."'>" .$row["donemler"]. "</a></td></tr>";
}
} else {
echo "0 results";
}
$conn->close();
?>
index.php
<script type="text/javascript">
var start = 0;
var limit = 20;
var reachedMax = false;
var dnmID = $_GET("donemID");
$(window).scroll(function () {
if ($(window).scrollTop() == $(document).height() - $(window).height() )
getData();
});
$(document).ready(function () {
getData();
});
function getData() {
if (reachedMax)
return;
$.ajax({
url: 'data.php',
method: 'POST',
dataType: 'text',
data: {
getData: 1,
start: start,
limit: limit,
dnmID: dnmID,
},
success: function(response) {
if (response == "reachedMax")
reachedMax = true;
else {
start += limit;
$(".results").append(response);
}
}
});
}
</script>
data.php
<?php
if (isset($_POST['getData']) ) {
$conn = new mysqli('localhost', 'usrnm', 'pss', 'db');
$dnmID = $conn->real_escape_string($_POST['dnmID']);
$start = $conn->real_escape_string($_POST['start']);
$limit = $conn->real_escape_string($_POST['limit']);
$sql = $conn->query("SELECT * FROM sikkeler WHERE donemID='$dnmID' ORDER BY kayit_no DESC LIMIT $start, $limit");
if ($sql->num_rows > 0) {
$response = "";
while($data = $sql->fetch_array()) {
$response .= '
<tr>
<td>ICD#'.$data['kayit_no'].'</td>
<td>'.$data['donemi'].'</td>
<td><img src="coin_images/'.$data['resim'].'" border="2" width="200px" /></td>
<td>'.$data['darp'].'</td>
<td>'.$data['tarih'].'</td>
<td>'.$data['birim'].'</td>
<td>'.$data['agirlik'].'</td>
<td>'.$data['cap'].'</td>
<td>'.$data['tip'].'</td>
<td>'.$data['reference'].'</td>
</tr>
';
}
exit($response);
} else
exit('reachedMax');
}
?>

Answer 1

You are checking through two different request methods:
$_POST['getData']
$k=$_GET['donemID']
Since you are using the query strings, it is a GET method to check with.
There is no such variable i.e. getData on main.php