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This chapter is from the book

This chapter is from the book

Web Application Development with PHP 4.0Web Application Development with PHP 4.0

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This chapter is from the book

This chapter is from the book

Web Application Development with PHP 4.0Web Application Development with PHP 4.0

Learn More Buy

Implementation

The implementation of the chat administration is designed to be quite similar to the main chat script. A bot is launched, which, with the help of phpIRC, logs into IRC and tries to register itself as IRC operator. Then it waits for further commands from a Web interface. These commands are issued like those in a database-backed RPC (remote procedure call). The bot will frequently query a table in the database that contains input commands for it. The commands are put into the database by the Web interface and consist of a function name, a session ID, and a parameter array. Whenever the bot finds a new command in the database, it executes it and writes the command results in an output table along with the session ID. Thus, the Web interface just has to write a command with a self-generated session ID and then only needs to wait until a result dataset with the same session ID pops up in the output table (see Figure 3.11).

This method allows flexible remote control over the bot.

03fig11.gifFigure 3.11. Database-backed RPC control over the administration bot.

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