Problem retriving the value in php from jquery.

Problem retriving the value in php from jquery.

Hi, i have populate one dropdownlist from database and now i want to send the data to the php code.
i have used following functions but it doesn't working.

<!DOCTYPE html>
<!--
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<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
        <script>

        $(document).ready(function(){
            $("#me").change(function(){
            //var my = $('#me :selected').text();
            var value = $("#me option:selected").val();
                alert("*----Received Data----*\n\nResponse : " + response+"\n\nStatus : " + status);
            });
            //var my $(this).val();
            $("#ii").show();
            });
        });
        </script>

    </head>
    <body>
        
        <?php
            include './config.php';
           
           
            $sqll="SELECT testsuite_id FROM assigned_testsuite_tester Where Tester_name = 'Pritesh'";
            echo "<select name='me' id='me'>";
            echo "<option value='other'>Select One</option>";  
            foreach ($conn->query($sqll) as $row){
                echo '<option value="'.$row['testsuite_id'].'">'.$row['testsuite_id'].'</option>';
            }
            echo "</select>";
            echo ''.PHP_EOL;
            $testsuite ='';
            if(isset($_POST['my'])){
                $testsuite = filter_input(INPUT_POST, 'my');
            }
            if($testsuite != ''){
                $sqll="SELECT Testcase_id FROM assigned_testsuite_testcase Where testsuite_id = '$testsuite'";
            }else {
                $sqll="SELECT Testcase_id FROM assigned_testsuite_testcase Where testsuite_id = 'TS02'";
            }
            if($result = $conn -> query($sqll) or die(mysqli_errno($conn))){
                echo "<label></label><select id='ii' name='ii' style='display:none;'>";
                $pid = $q;
                echo "<option value='other'>Select One</option>";  
                while ($row = mysqli_fetch_array($result)){
                        echo "<option value={$row['Testcase_id']}>{$row['Testcase_id']}</option>";  
                }
                echo "</select>";
            } else {
                echo '<h1>no</h1>';
            }    
            echo ''.PHP_EOL;
        ?>
    </body>
</html>