How do you write extensions to PHP4?
Is there any structured documentation/example on this topic in the Web, or even a 'dead tree' manual explaining the required steps and the available interfaces to write such a beast?
I need to know if it is feasible to call 'legacy' dynamic libraries (under both *nix and NT), as well as commercial products libraries (e.g. IBM MQ Series or BEA TUXEDO) from a PHP4 server side script (I wouldn't resort to CGIs).
I looked into the code for the cpdf extension, and found calls to a lot of 'undocumented' helper functions, so many in fact as to fear it would be a daunting task without proper education ... am I correct (hope not)?.
Thank you in advance
Massimo
P.S. I found a previous post on this topic, but since the author asked for direct replies, and no answer has been logged here, I dunno what he got!
