Check Barcode valid from phonegab android to remote phpfile - php

Question

I can read Qrcode and what i want is to check if the text in qrcode is in remote database. I have a php file where I do some process to check if database is in mysql. But it does not work. below my code
/*part of js file
scan: function() {
console.log('scanning');
var scanner = cordova.require("cordova/plugin/BarcodeScanner");
scanner.scan( function (result) {
var rs= result;
$.ajax({
type: 'POST',
data: rs,
url: 'http://url/page.php',
success: function(data){
console.log(data);
document.getElementById("info").innerHTML = data;
},
error: function(){
console.log(data);
alert('error');
}
});
return false;
}, function (error) {
console.log("Scanning failed: ", error);
} );
}
/* My php file
<?php
// Create connection
$conn = mysql_connect($servername, $username, $password);
mysql_select_db("database", $conn);
$result=$_POST['result'] ; //value from qrcode scanned by device
$sql="SELECT * FROM tabe WHERE code = '$result' ";
$rs = mysql_query($sql,$conn);
$count=mysql_num_rows($rs);
if($count == 1) {
echo "ok";
}
else
{
return "No Ok";
}
?>