Output compression

A while ago I implemented Content-encoding: gzip compression for php (that was back in 3.06 and 3.1 days) which never made it into the distribution. I was thinking about reimplementing it for php4. I looked into the SAPI/ext mechanism but it doesn't really fit in there as I need to act as a filter between the core and the SAPI module, not replace the SAPI module. I can think of three approaches: 1) Don't touch core code and wedge into SAPI output functions at module initialization (Problem: Get request-specific context to store compression state.) 2) Hack it into the low-level output functions (that's what I did the first time). 3) Extend SAPI or add a Filter mechanism where output filters can register to. I looked into 1) because I wanted to avoid changing the core code but ran into problems with where to store compression context. Solution 3) would be the cleanest but I didn't work at the PHP4 code quite a while. Maybe someone else has a better overview over the code and can tell me if it would be feasible/easy to do. And yes, I also want to make sure that my changes are welcome before I commit them this time ;-) - Chris -- Chris Schneider, mailto:cschneid@relog.ch Computers are not intelligent. They only think they are.