Hi there, I am researching the possibility of developing a shared library which can perform database queries in parallel to multiple databases. One important requirement is that I will be able to use this functionality from PHP. Because I know PHP is not thread-safe due to other libraries, I am wondering what would be the best way to implement this. Right now I can imagine three solutions:
- Use multiple threads to connect to the databases, but let the library export a blocking single-threaded API. So, PHP calls a function in the library, this function spawns new threads, which do the real work. Meanwhile the function waits for the threads to finish, and when all threads are done it returns the final result back to PHP. - Use a single thread and asynchronous socket communication. So, PHP calls the library function and this function handles all connections within the same thread using asynchronous communication, and returns the result to PHP when all communication is completed. - Use a daemon on the localhost. Make a connection from PHP to the daemon, the daemon handles all the connections to the databases and passes the result back to the connection made from PHP. Can someone give me some advise about advantages of using one approach or another? Please keep in mind that I'm hoping for a solution which will be both stable and minimizes overhead. Thanks, Arend. -- Arend van Beelen jr. "If you want my address, it's number one at the end of the bar."
