Untitled

<html>
   <body>
    <div>
      <form style="display:inline_block" action="insert_data.php" method="post">
        FirstName: <input type="text" name="FirstName"><br>
        LastName:  <input type="text" name="LastName"><br>
        E-mail:    <input type="text" name="email"><br>
                  <input type="submit" value="Insert">
      </form>
      <form style="display:inline_block" action="show_data.php">
    <input type="submit" value="Show Database">
      </form>

      <form style="display:inline_block" action="delete_form.html">
    <input type="submit" value="Delete Data">
      </form>

    </div>
  </body>
</html>

<html>
  <body>
    <?php
    include('connect_db.php');

    //function insert(){
      $firstname = $_POST["FirstName"];
      $lastname = $_POST["LastName"];
      $email = $_POST["email"];

      echo $firstname . '<br/>' . $lastname . '<br/>' . $email . '<br/>';

      $sql_insert = "INSERT INTO Pacient(firstname,lastname,email)
              VALUES ('$firstname', '$lastname','$email')";


      if( mysqli_query($conn, $sql_insert))
          echo "New record created successfullly";
      else
          die("Failed inserting data: " . mysqli_error($conn));
    //}
    //insert();
    ?>
    <form action="form.php">
    <input type="submit" name="Home" value="Home">
    </form>
  </body>
</html>

<html>
  <body>
    <?php
      $servername = "localhost";
      $username = "user";
      $password = "password";
      $dbname = "Data_Base_Name";

      //Create connection
      $conn = new mysqli($servername, $username, $password, $dbname);

      //Check connection
      if (!$conn)
        die("Connection failed: " . mysqli_error($conn) . '<br/>');
      else
        echo "Connected successfully" . '<br/>';

      if(mysqli_query("USE $dbname" ) )
        die("Failed selecting database: " . mysqli_error($conn) . '<br/>');
      else
        echo "Selected with success" . '<br/>';
    ?>
  </body>
</html>

if( mysqli_query($conn, $sql_insert))
      echo "New record created successfullly";
  else
      die("Failed inserting data: " . mysqli_error($conn));