header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");

<?php

 header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "database";
$conn = new mysqli($servername, $username, $password, $dbname);
$data = json_decode(file_get_contents("php://input"));
$sql = "INSERT INTO employees (name, position, department, salary)
VALUES ('$data->name', '$data->position', '$data->department', '$data->salary')";
if($data->name){
    $qry = $conn->query($sql);
}
$conn->close();
?>