p17.10/php/post.php

<?php

$con = mysqli_connect("192.168.80.31", "root", "secret", "db");

$data = json_decode(file_get_contents('php://input'), true);

$kw = "INSERT INTO Persons (LastName, FirstName, Email, Subject, Path) VALUES ('{$data['ln']}', '{$data['fn']}', '{$data['email']}', '{$data['subject']}', '{$data['path']}')";
$ans = mysqli_query($con, $kw);

echo json_encode($kw);

?>