[flexcoders] Error when try to run simple example get method from flex to php

[Harry Saputra]

I try to run example from :
http://www.adobe.com/devnet/flex/articles/php_getstarted.html in my
apache2.2 that have installed with php and flex module.

.mxml file :

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; layout="absolute"
backgroundColor="#f6f6f6" backgroundGradientColors="[#f6f6f6, #bbbbbb]">

   <mx:Label x="10" y="10" text="Submit form using get method" fontSize="20"
fontWeight="bold"/>
   <mx:HRule x="10" y="49" width="80%"/>
   
   <mx:HTTPService id="form1" url="show.php" method="GET"
resultFormat="text" result="{textarea1.text = String(event.result)}">
      <mx:request>
         <username>{username.text}</username>
      </mx:request>
   </mx:HTTPService>
   
   <mx:TextInput id="username" x="10" y="71"/>
   <mx:Button x="178" y="71" label="Submit" click="form1.send()"/>
   <mx:Label x="10" y="101" text="Result"/>
   <mx:TextArea x="10" y="118" width="234" height="188" id="textarea1"/>

</mx:Application>

And show.php file :

<?php

   // send a response back to the client
   print "You submitted the following form information:\n";
   foreach ($_REQUEST as $k =?> $v) {
      print "   $k = $v\n";
   }

?>


And error :

[RPC Fault faultString="HTTP request error" faultCode="Server.Error.Request"
faultDetail="Error: [IOErrorEvent type="ioError" bubbles=false
cancelable=false eventPhase=2 text="Error #2032: Stream Error. URL:
show.php?username=Halo"]. URL: show.php"]
                at
mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHan
dler()
                at mx.rpc::Responder/fault()
                at mx.rpc::AsyncRequest/fault()
                at ::DirectHTTPMessageResponder/errorHandler()
                at
flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFun
ction()
                at flash.events::EventDispatcher/dispatchEvent()
                at flash.net::URLLoader/flash.net:URLLoader::redirectEvent()

Please help to solve this..