[php] Refresh page after form submitting

  //insert this php code, at the end after your closing html tag. 

  <?php
  //setting connection to database
  $con = mysqli_connect("localhost","your-username","your-
  passowrd","your-dbname");

  if(isset($_POST['submit_button'])){

     $txt_area = $_POST['update']; 

       $Our_query= "INSERT INTO your-table-name (field1name, field2name) 
                  VALUES ('abc','def')"; // values should match data 
                 //  type to field names

        $insert_query = mysqli_query($con, $Our_query);

        if($insert_query){
            echo "<script>window.open('form.php','_self') </script>"; 
             // supposing form.php is where you have created this form

          }



   } //if statement close         
  ?>

Hope this helps.