This PHP library is divided into 4 packages. The top-level <mxServer> class dynamically includes everything else.
The view and model packages implement the graph component, represented by mxGraph. It refers to a mxGraphModel which contains mxCells and caches the state of the cells in a mxGraphView. The cells are painted using a <mxCanvas> based on the appearance defined in mxStylesheet.
The I/O module requires libxml support. The mxGdCanvas requires GD support.