phMagick: Perform image manipulation operations

This class can be used to perform image manipulation operations with the ImageMagick program.

It calls the ImageMagick program passing parameters to process several types of operations on image files.

Currently it can resize images, create thumbnails, darken or brighten images, adding watermarks, rotating, flipping, cropping, converting to grey scale and inverting the images, applying effects like drop-shadows, rounded corners and a "polaroid look".
It can also generate thumbnails from Avi and Pdf files