Chapter 2. Status of the project
Firstly, there was a project named phpsdl (search google to find it), but it seems to be dead.
Any code of this extension is taken from that project, only the idea.
Link of changelog is: Here.
Link of FunctionCalls is: Here.
Reporting the status of implemented sdl calls:
Table 2.1. Implementation
| Functions: 209 |
| Implemented: 199 |
| Tested: 102 |