PHP can't receive a param from ActionScript3 - php

Question

I have build a website and communicate with actionscript. in actionscript i'm build a function to call php function and post a variables for load data from mysql database.The problem is when i call actionscript function and post variables to php.The php side i call $_POST['action']; for receive a variables from actionscript side but when i want to see this Post $_POST['action']; it error like this
Notice: Undefined index: action in C:\wamp\www\MPA-EM\bin\model.php on line 3
and this is a action script function to call php:
public function SelectData(TBN:String,TYPE:String):void{
var myrequest:URLRequest = new URLRequest("http://localhost/MPA-EM/bin/model.php");
myrequest.method = URLRequestMethod.POST;
var variables:URLVariables = new URLVariables();
variables.tablename = TBN;
variables.action = TYPE;
myrequest.data = variables;
var loader:URLLoader = new URLLoader();
loader.dataFormat = URLLoaderDataFormat.VARIABLES;
loader.addEventListener(Event.COMPLETE, dataOnLoad);
loader.addEventListener(Event.CANCEL, dataError);
try{
loader.load(myrequest);
}catch(e:Error){
Alert.show(e.toString());
}
}
public function dataOnLoad(evt:Event):void
{
Alert.show(evt.target.data.Result);
if(evt.target.data.Result) {
DText.text = 'ok';
} else DText.text = "Error in select submitted data";
//status is a custom flag passed from back-end
}
public function dataError(e:Event) :void{
DText.text = e.target.errormsg;
}
and this is a php function side model.php:
<?php
//test for recive
$actionW = $_POST['action'];//error this line.
echo $actionW;
// end test
if(isset($_POST['action']) && !empty($_POST['action'])) {
$action = $_POST['action'];
echo $action;
switch($action) {
case 'select' :
$tablename = clean($_POST['tablename']);
selectedData($tablename);
break;
case 'blah' : blah();break;
}
}
function selectedData($table){
// create connection
$connection = mysql_connect("localhost", "root", "") or die ("Couldn't connect to the server.");
// select database
$db = mysql_select_db("ideaddcom_maps", $connection) or die ("Couldn't select database.");
// create SQL
$sql = 'SELECT * FROM '.$table;
// execute SQL query and get result
echo $sql;
$sql_result = #mysql_query($sql, $connection) or die ("Couldn't execute query.".mysql_error());
$row = mysql_fetch_object($sql_result);
foreach($row as $cname => $cvalue){
echo "Result=$cvalue";
}
// free resources and close connection
mysql_free_result($sql_result);
mysql_close($connection);
}
//Function to sanitize values received from the form. Prevents SQL injection
function clean($str) {
$str = #trim($str);
if(get_magic_quotes_gpc()) {
$str = stripslashes($str);
}
return mysql_real_escape_string($str);
}
?>
What wrong? Pls any idea for this and Thank.

Answer 1

I do not know if you've found a solution for your problem, but this may help someone else.
1 - Take a look here, It can help you : Submitting scores from AS3 to PHP/SQL - #Error 2101
2 - To avoid PHP Undefined index Notice, you should always verify if your var is set before use it, like what you've done at line 7.
3 - Avoid all outputs that are not used by your AS script in the PHP script because AS will just get the first output.
4 - If you use a for or foreach loop to get data in your PHP script, you should do like this because echo that will send data to AS should be executed once :
$result = '';
$sep = ',';
foreach($row as $cname => $cvalue){
$result .= $cvalue . $sep;
}
echo 'Result='.$result;