when i used insert statement why null value to store in my webserver.. ?

Getting Started Newbie Questions
#1

this my main.lua

local myNewData
local json = require (“json”)
local decodedData

local playerName = “sos”
local playerscore = “200”

local function networkListener( event )
        if ( event.isError ) then
                print( “Network error!”)
        else
                myNewData = event.response
                print ("From server: "…myNewData)
                decodedData = (json.decode( myNewData))
   – SaveData()
        end
end
–end

local URL = “http://1dermindstudios.comyr.com/submitscore.php?playername=” …(playerName) … “&playerscore=” …(playerscore)
network.request( URL, “GET”, networkListener )

and this is my php

<?php
$host=“mysql6.000webhost.com”;    
$username=“a9679956_caps2ne”;
$password=“blabla”;           
$db_name=“blabla”;           

$con=mysql_connect("$host", “$username”, “$password”)or die(“cannot connect”);
mysql_select_db("$db_name") or die (“cannot select DB”);

mysql_select_db("$db_name") or die (“cannot select DB”);
$sql = “select * from player”;    //replace with your table name
$result = mysql_query($sql);
$json = array();
$count=0;
if(mysql_num_rows($result)){
while($row=mysql_fetch_row($result)) {
$count = $count+1;
$json[“movie”.$count]=$row;
}
}
mysql_close($db_name);
echo json_encode($json);
?>

#2

problem solve

#3

problem solve