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<?php
include_once('config/config.php');

if (!empty($_POST['offer_email'])) {

$email = mysqli_real_escape_string($conn, test_input($_REQUEST['offer_email']));

$sql_offer = "Insert into offer_email set email='" . $email . "'";

$query_offer = mysqli_query($conn, $sql_offer);

if ($query_offer) {

$_SESSION['offerMail'] = "Your details submitted successfully";
    $referer = $_SERVER['HTTP_REFERER'];
    header("Location: index.php");
    exit();
  }
}

if (!empty($_POST['email'])) {
  
  if (empty($_POST["name"])) {

$_SESSION['msg1'] = "Please enter name";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
  } else {

if (!preg_match("/^[a-zA-Z ]*$/", $_POST["name"])) {

$_SESSION['msg1'] = "Only letters and whitespace allowed for name";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
    }
  }

if (!filter_var($_POST["email"], FILTER_VALIDATE_EMAIL)) {

$_SESSION['msg1'] = "Invalid email format";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
  }

if (empty($_POST["message"])) {

$_SESSION['msg1'] = "Please enter message";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
  }

if (empty($_POST["phone"])) {

$_SESSION['msg1'] = "Please enter phone";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
  } else {

if (!is_numeric($_POST["phone"])) {

$_SESSION['msg1'] = "Only numbers allowed for phone";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
    }

if (!preg_match("/^[+]?[1-9][0-9]{9,14}$/", $_POST["phone"])) {

$_SESSION['msg1'] = "Enter only 10 digit number for phone";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
    }

}

if (!empty($_POST['name']) && !empty($_POST['email']) && !empty($_POST['phone'] && !empty($_POST['message']))) {

$name = mysqli_real_escape_string($conn, test_input($_REQUEST['name']));

$email = mysqli_real_escape_string($conn, test_input($_REQUEST['email']));

$phone = mysqli_real_escape_string($conn, test_input($_REQUEST['phone']));

$message = mysqli_real_escape_string($conn, test_input($_REQUEST['message']));

$sql = "Insert into contact set name='" . $name . "', email='" . $email . "', phone='" . $phone . "',  message='" . $message . "', created=date('Y-m-d H:i:s')";

$query = mysqli_query($conn, $sql);

if ($query) {

$_SESSION['msg'] = "Your details submitted successfully";
        $referer = $_SERVER['HTTP_REFERER'];
        header("Location: $referer");
        exit();
      } else {

$_SESSION['msg1'] = "Something error";

$referer = $_SERVER['HTTP_REFERER'];

header("Location: $referer");

exit();
      }
    }
  
} else {

header("Location: index.php");

exit();
}