Codeplague » PHP http://blog.codeplague.org When coding becomes the plague Mon, 14 Apr 2008 04:02:13 +0000 http://wordpress.org/?v=2.6.1 en Upload XML into Flex http://blog.codeplague.org/2008/01/10/upload-xml-into-flex/ http://blog.codeplague.org/2008/01/10/upload-xml-into-flex/#comments Fri, 11 Jan 2008 03:31:50 +0000 wesw02 http://blog.codeplague.org/2008/01/10/upload-xml-into-flex/ Today I was asked to add some functionality to a flex application I have been developing, that functionality was to give users the option to upload the XML data file, rather than fetch it from the server. I won’t go in to the details of the application, just that it is completely driven on its data, which is provided via XML. After doing some reading I was surprised to learn that it is not possible to upload an XML file without a server side script of some kind. I choose to use PHP because its quick, easy, and simple. So the concept is that the user sends the file through flex to a server side script, that script accepts the file and returns its contents back to flex as XML.

Here is the flex code:

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
  layout="absolute" width="275" height="354" 
  creationComplete="init()">
<mx:Script>
<![CDATA[
  import mx.rpc.events.*;
  import flash.events.*;
  import flash.net.FileReference;
  import flash.net.URLRequest;
  import flash.net.FileFilter;
 
  private var myXML:XML;
  private var file:FileReference;
 
  private function init():void {
    file = new FileReference();
 
    // Add Event Listners
    file.addEventListener(Event.SELECT, userSelectedFile);
    file.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA, serverResponse);
  }
 
  private function browse():void {
    file.browse([new FileFilter("XML", "*.XML;")]);
  }
 
  // Called after the user selects the file to upload
  private function userSelectedFile(event:Event):void {
    file = FileReference(event.target);
    file.upload(new URLRequest("file_upload.php"), "FileData", false);
  }
 
  // Called after flex receives response from PHP
  private function serverResponse(event:DataEvent):void {
    myXML = XML( event.data );
    XML_Box.data = myXML;
  }
]]>
</mx:Script>
<mx:VBox>
</mx:VBox>
  <mx:Button id="Upload" label="Upload" click="browse()" x="200" y="322"/>
  <mx:TextArea id="XML_Box" width="250" height="300" x="12.5" y="10"/>
</mx:Application>

Here is the php code:

<?php
// Set the header information
header ("content-type: text/xml");
 
// Open the uploaded file
$file_handler = fopen($_FILES["FileData"]["tmp_name"], "r");
 
// Display the file contents
while(!feof($file_handler))
{
        echo fgets($file_handler);
}
 
// Close the file
fclose($file_handler);
?>

That’s all there is to it! To try it out just click the upload button and select an XML file to upload. If you don’t have an XML file handy you can use this sample file.
Get FlashPlayer

]]> http://blog.codeplague.org/2008/01/10/upload-xml-into-flex/feed/ Hello world! http://blog.codeplague.org/2007/12/21/hello-world/ http://blog.codeplague.org/2007/12/21/hello-world/#comments Fri, 21 Dec 2007 22:56:35 +0000 wesw02 http://blog.codeplague.com/?p=1 
<script type="text/javascript">
  alert('Hello World!');
</script>
<?php
  echo "Hello World!";
?>
public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Hello World!");
  }
}
#include <iostream>
 
int main()
{
  std::cout << "Hello World!" << std::endl;
  return 0;
}

You get the idea.

]]> http://blog.codeplague.org/2007/12/21/hello-world/feed/