具有Base64和PHP的Flash AS3 PNGEncoder无法正常工作

Question

I am trying to utilize the PNGEncoder with the dynamicfash Base64 to send a Base64 String to PHP and save the PNG File but for some reason that i cannot figure out, the PNG file is never readable. It is there and has a size (contains data) but cannot be opened by anything so is not a valid png file. Here is my code...

var target:MovieClip = new MovieClip();
target.graphics.beginFill(0xff0000,5.0);
target.graphics.drawRect(0,0,100,100);
target.graphics.endFill();

var bdata:BitmapData = new BitmapData(100, 100);            
bdata.draw(target);  
var stream:ByteArray = PNGEncoder.encode(bdata);             
var byteArrayAsString:String = Base64.encodeByteArray(stream);

var request:URLRequest = new URLRequest("pngsave.php");
request.method = URLRequestMethod.POST;
var variables:URLVariables = new URLVariables();
variables.fileName = "testing.png";
variables.image = byteArrayAsString;
request.data = variables;
navigateToURL(request, "_blank");

and the PHP Code...

<?php
header('Content-Type: image/png');
header("Content-Disposition: attachment; filename=".$_POST['fileName']);

echo base64_decode($_POST["image"]);
?>

Any ideas on what I am doing wrong here?

Answer 1

With FlashPlayer 10 (which has >95% adoption rate) you don't need to send the png data to a php page. Just use FileReference.save() instead.