Prob in php

php file ko sir. gagamitin ko sana sa for google drive pagconnect ng android app ko tolaptop

<?php

//This script is designed by Android-Examples.com
//Define your host here.
$hostname = "localhost";
//Define your database username here.
$username = "Real";
//Define your database password here.
$password = "1234567890";
//Define your database name here.
$dbname = "library";

 $con = mysqli_connect($hostname,$username,$password,$dbname);

 $StudentNo = $_POST['studentno'];
 $StudentName = $_POST['studentname'];
 $ContactNo = $_POST['contactno'];
 $Title = $_POST['title'];
 $Author = $_POST['author'];
 $Subject = $_POST['subject'];
 $CallNo = $_POST['callno'];

 $Sql_Query = "insert into studreserve (studentno,studentname,contactno,title,author,subject,callno) values
 ('$StudentNo','$StudentName','$ContactNo','$Title','$Author','$Subject','$CallNo')";

 if(mysqli_query($con,$Sql_Query)){

 echo 'Loi';

 }
 else{

 echo 'Try Again';

 }
 mysqli_close($con);
?>