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Author: Nuno Mira | Website: http://www.nunomira.com/


If you don’t have access to a PHP enabled server you can easily install one locally.
WampServer and XAMPP are the most common ones.

Create a PHP file, e.g.: script.php and add the following code:

if ( isset( $_POST["filename"] ) && isset( $_POST["img"] )  )
	$filename = $_POST["filename"]; // get the filename
	$img = base64_decode($_POST["img"]); // get bytearray

	$fp = fopen( $filename, 'w+' ); // create the file for writing

	fwrite( $fp, $img ); // create the image

	fclose( $fp );
	echo "Image saved.";
	echo "Error saving image.";

The code is straight forward:
First you make sure that the two variables (filename and img) that come from Flash exist.
A new file with the name filename is created, and the decoded ByteArray is added to it.
You have just created a new image.


Just like you created a JPG file, you could be creating a PNG.
For this you'd use the PNGEncoder Class.

var png:PNGEncoder = new PNGEncoder();
var byteArray:ByteArray = PNGEncoder.encode(bmd);

Which would be required if you wanted an image with transparency.
For this, you'd use the code:

var bmd:BitmapData = new BitmapData (image_mc.width, image_mc.height, true, 0x00000000);

Notice the third - true - and fourth parameter - 0x00000000.
The third means that it has transparency and the fourth has the format AARRGGBB, thus taking the alpha into account.

» Level Intermediate

Added: 2011-03-31
Rating: 2.75 Votes: 4
» Author
Nuno Mira has been a Flash Developer for 9 years. He loves teaching, and learning. When he isn't coding he may be surfing or snowboarding.
» Download
Download the files used in this tutorial.
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