<?php
	//// ===============================================================================
	//// creating connection
	$servername = "";
	$username = "";
	$password = "";
	$dbname = "";

	$conn = mysqli_connect($servername, $username, $password, $dbname);
	if (!$conn)
	{
		die("Connection failed: " . mysqli_connect_error());
	}

	// catch raw data send with Content-Type header : application/json
	$json = file_get_contents('php://input');
        $data = json_decode($json);

	$sql = "SELECT u.id
		FROM user_info u
		WHERE '$data->login' = u.login AND '$data->passwd' = u.passwd";

	// execute query and check if error
	if(!($result = mysqli_query($conn, $sql)))
	{
		echo "$param Error: " . $sql . "<br>" . mysqli_error($conn);
	}

        $id = -1;
	if(mysqli_num_rows($result)>0)
	{
		$row = mysqli_fetch_assoc($result);
		$id = $row['id'];
	}
	$id = array("id"=>$id);

        echo json_encode($id);

	mysqli_close($conn);
?>