Phonegap Ajax and wampserver/php - php

Question

I am currently trying to simply get Ajax to 'activate' a php file on wampserver
Better to show the code that explain I think
The following is a function activated by a button, the HTML/JS all works fine
var jsonString = "";
function jsonconversion(){
jsonString = JSON.stringify(myArr);
return jsonString;
console.log(jsonString);
$.ajax({
type: "POST",
url: "http://xx.xx.xx.xx:80/xx/index2.php",
data: jsonString,
complete: function() {
console.log("Success");
},
error: function() {
console.log("Function: forward_to_server() error")
}
});
}
However, I can't seem to access the php file. For ease, I am not even using the jsonString in the php file, instead I am simply trying to post some integers into a database on wamp. The php file loaded by itself works fine
<?php
$servername = "localhost";
$username = "root";
$password = "xx";
$dbname = "xx";
//$myArray = $_REQUEST['jsonString'];
$myArray = array(100,1,19);
$con = mysqli_connect($servername,$username,$password ,$dbname) or die ("could not connect database");
echo $myArray;
$keys = array_keys($myArray); // get the value of keys
$rows = array(); // create a temporary storage for rows
foreach($keys as $key) { // loop through
$value = $myArray[$key]; // get corresponding value
$rows[] = "('" . $key . "', '" . $value . "')";
// add a row to the temporary storage
}
$values = implode(",", $rows); // 'glue' your rows into a query
$sql = "INSERT INTO php_test (temp, sound, light) VALUES (10,20,30)"; //. $values
$rs = mysqli_query($con,$sql) or die(mysqli_error($con));
if ($con->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $con->error;
}
$con->close();
?>
However when I call the function in phonegap, it doesn't seem to work, I have no errors either which is hurting the process :(
Wamp server is 'online' and I can access it from the internet.
Any guidance on this?
Thanks in advance