title: PHP framework to build Workflow Management system
body: <p>I am looking for PHP framework to build a Workflow Management system. 
  While searching on net i got RADICORE which is quite best one. Just looking for more option so that I can compare them and go with one of them</p>
  
  <p>My requirement is as:
  I need framework that can define a workflow as we do in RADICORE and then play around it. 
  Playing means that if there 4 steps in my workflow, i can drop one and see How the workflow proceeds. 
  There are many frameworks through which you can generate a graph of your existing flow.
  So i am basically interested in defining a workflow rather than generating the graph for existing framework. </p>
  
  <p>And i should be an open source framework (basically PHP). </p>