i am developing an API and when I try to insert datas in my database , I get a aql syntax error . What’s the problem ?

here’s my code

<?php

header("Access-Control-Allow-Origin:*");
header("Content-Type:application/json");

include("../dbconfig/database.php");

if (isset($_POST)) {

  $name = $_GET['name'];
  $password = $_GET['password'];
  $email = $_GET['email'];
  $phone_number = $_GET['phone_number'];
  $home_number = $_GET['home_number'];
  $national_Code = $_GET['national_Code'];
  $card_number = $_GET['card_number'];
  $birth_date = $_GET['birth_date'];

  try {
    $result = $con->prepare("INSERT INTO user SET name=$name , password=$password , email=$email , phone_number=$phone_number , home_number=$home_number , national_Code =$national_Code , card_number=$card_number , birth_date=$birth_date");
    $result->execute();
    $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  } catch (PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
  }

}