http://about.phalacee.com Jesus thinks you're to die for Wed, 04 Jan 2012 07:27:10 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://about.phalacee.com/geek/creating-mask-layers-using-php-gd http://about.phalacee.com/geek/creating-mask-layers-using-php-gd#comments Mon, 29 Jun 2009 03:58:40 +0000 Jason Fowler http://about.phalacee.com/?p=431

Start with original image - $img

Copy that image to a png - $copy

Create a mask png image of the area you want in the circle/ellipse (a 'magicpink' image with a black shape on it, with black set to the colour of alpha transparency) - $mask

Copy $mask over the top of $copy maintaining the Alpha transparency

Change what you need to on $copy

Copy $copy back over $img maintaining the Alpha transparency

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