Form_bank.php

<?php
$server="localhost";
$user="root";
$password="";
$db="bank";
$con=mysqli_connect($server,$user,$password,$db);
if(!$con)
	die("Not connected".mysqli_error());
else
echo "connection done";
if(isset($_POST['submit']))
{
  $c_name=$_POST['name'];
  $c_city=$_POST['city'];
  $c_street=$_POST['street'];

  $query= "INSERT INTO customer(customer_name,customer_city,customer_street) VALUES ('$c_name','$c_city','$c_street')";
  $result=mysqli_query($con,$query);
  if($result)
  echo "\nRecord  added successfully <br>";
}
mysqli_close($con);
?>

<!DOCTYPE html>
<html>
<head>
	<title> Bank  Database   </title>
</head>
<body>

<h2>IST Bank</h2>

<form action="form.php" method="post">
   Name:<br>
  <input type="text" name="name">
  <br>
  City:<br>
  <input type="text" name="city">
  <br>
  Street:<br>
 <input type="text" name="street">
 <br>
 <input type="submit" name="submit" value="submit">

 </form>
 </body>
</html>