I'm trying to get a number from a mysql line then outputting it to ajax. the number can't be a string because I will multiply it in ajax. This is what i have so far. I'm not sure what to do from here.
ajax:
$(document).ready(function()
{
$("#btnCalc").click(function()
{
var user = $("#txtUser").val();
var amount = $("#txtAmount").val();
var category = $("txtCat").val();
var number = $("txtNum").val();
var result = '';
$.get("code/value.php",
{
ID:user,
amount:amount,
result:result
},function(query)
{
if ( user > 0 and user < 30 ){
alert(result);
}
else{
alert( 'invalid user ID');
}
});
});
});
php:
<?php
$userID = $_GET["ID"];
$amount = $_GET["amount"];
$category = $_GET["category"];
$num = $_GET["number"];
require "../code/connection.php";
$SQL = "select userAmount from user where userID= '$userID'";
$reply = $mysqli->query($SQL);
while($row = $reply->fetch_array() )
{
}
if($mysqli->affected_rows > 0){
$msg= "query successful";
}
else{
$msg= "error " . $mysqli->error;
}
$mysqli->close();
echo $msg;
?>