I need a function (script) wich opens an image in Photoshop, replace text in some textlayers and store image as jpeg. I want to call the function with the path of the PS-image, an array with the textlayers and the text to replace, the x resolution in pixel and the path of the resulting jpeg file. It mus be possible to call this function within a php script. The return value should be FALSE or TRUE.

It must run on Mac OS X 10.6, php 5.2 and Photoshop CS3 and CS4