Hi, On 6/30/05, Nick Stone <nick@xxxxxxxxxxxx> wrote: > I'm currently implementing a standalone app using php cli. Part of the app > connects to Postgres and waits for a notification using the "Listen > <tablename>" SQL. In the postgres C lib there is a function called > "Pqsocket" which returns the file-descriptor of the socket connection to > Postgres. With this I can use a simple select server to sleep on this > interface and others in the application. > > Does anybody now of a patch to make this available under PHP or does the > structure of PHP code effectively make this type approach impossible? You can write a very simple patch returns socket FD using PQsocket(). But, AFAIC, it's not as simple as it seems to listen a socket using just its FD value. As I understand from the source code, resource required by socket_open() function has its own internal struct representation, which means you need to be familiar with PHP internal data types and mechanism before writing a patch. Therefore, it's not impossible to implement such a feature, but, to be honest, it needs a hard work. IMHO, you can enter a loop with pg_last_notice() by using usleep(). I won't think it'd cost so much system resource for you. Regards.
