<?php require 'classes/zipcode.php'; require_once 'common/header.php'; if (isset($_POST['submit'])) { // $address = 'Kothapet, Anantapur, Andhra Pradesh, India'; $res = ''; $zc = new Zipcode(); $res = $zc->getPincode(trim($_POST['address'])); } ?> <h1> Find Pincode</h1> <div class="row" style="margin-bottom: 10px;"> <form id="pin-form" role="form" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?> "> <div class="form-group"> <div class="col-sm-4"> <input type="text" class="form-control" id="address" name="address" placeholder="Enter Address" value="<?php if (isset($_POST['address'])) { echo $_POST['address']; } ?> "> </div> </div> <div class="form-group"> <div class="col-md-4"> <button type="submit" class="btn btn-default" name="submit">Get Pincode</button> </div>