php(myproject/withdraw_submit_success)form

<?php
session_start();
include('../dbh.php');


    if(isset($_POST['submit'])){
       
        $with_date =$_POST['with_date'];
        $member_id = $_POST['member_id'];
        $member_name = $_POST['member_name'];
        $withdraw_amount = $_POST['amount'];
        $area         = $_POST['area'];
        $status     = $_POST['status'];

        $getWithdraw = "SELECT withdraw_amount, withdraw_total FROM user_withdraw WHERE member_id='$member_id' ORDER BY withdraw_id DESC LIMIT 1;";
        $result = mysqli_query($conn, $getWithdraw);
        $row = mysqli_fetch_assoc($result);
       
        $withdrawAmount = $row['withdraw_total'] + $withdraw_amount;
       
       
        if(    $member_id == ''){
            $_SESSION['dep'] = "<div class='alert alert-danger'>Member id is Required.</div>";
            header("Location:../withdraw.php");
            exit();
        }   
       
        $sql = "INSERT INTO user_withdraw (date,member_id,    member_name,    withdraw_amount,    withdraw_total,    area,    status)
        values( '$with_date','$member_id','$member_name',$withdraw_amount,'$withdrawAmount','$area ','$status');";
        $query = mysqli_query($conn,$sql);
       
       
       
        $_SESSION['dep'] = "<div class='alert alert-success'>Data isnertead.</div>";
        header("Location: ../withdraw.php");

} else{
    $_SESSION['dep'] = "<div class='alert alert-danger'>Data not isnertead.</div>";
    header("Location:../withdraw.php");
}
?>