error

<?php

$host = "localhost";
$user = "root";
$password = "";
$db = "1019980";

$sql = "select * from staff;";

$con = mysqli_connect($host,$user,$password,$db);

if(mysqli_connect_errno()){
    echo "failed to connec to MySQL". mysqli_connect_error();
}else{
    echo "connection successfully";
}
$result = mysqli_query($con,$sql);

/*
$response = array();

echo "starting..";
while($row = mysqli_fetch_array($result)){
    //array_push($response,array("id"=>$row[0],"name"=>$row[1],"position"=>$row[2]));
    echo "<>";
    echo "-->".$row[0].$row[1].$row[2]."</br>";
}

//echo json_encode(array("->server_response"=>$response));
*/

mysqli_close($con);

?>