Data

<?php
session_start();
$_SESSION['messsage'] = '   ';
$mysqli = new mysqli('host', 'user', 'password', 'databases');
// Eg: $mysqli = new mysqli('localhost', 'root', '', 'alpha');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
      $smg= $mysqli->real_escape_string($_POST['smg']); // kujikinga na sql injection
     // $smg= htmlentities($_POST['smg']); kutoa tags kwenye inputs
      //$smg= htmlspecialchars($_POST['smg']);
     // $smg= strip_tags($_POST['smg']);

       $sql = "INSERT INTO request (smg) "
               . "VALUES ('$smg' )";
                if ($mysqli->query($sql) === true){
                $_SESSION['message'] = "Saccessful text hire!";
                header("location: index.php");
                    }
                  else {
                        $_SESSION['message'] = "ERROR TEXT";
                                }
                          }
?>

<!DOCTYPE html>
<html>
<head>
   <title></title>
</head>
<body>
<!--page start--->
<h3> <?= $_SESSION['message'] ?></h3>
  <!--end of the page-->
<form action="request_book.php" method="post" enctype="multipart/form-data">
  <!--form code--->
  </form>
</body>
</html>