PHP Developers Network

I have enough common sense that when it says "No external libraries are needed for this function" it's a good thing!

But what about those functions that need external libraries? Where are they and how do you implement them? I was just curious and wanted to know.

Not sure what language you are talking about, so I will assume PHP. Functions that require external libraries need to have the library module loaded and initialized in the php.ini configuration file. If you look in the php.ini file (or the httpd.conf for that matter) you can see many additional modules are commented out and not loaded by default. They can also be compiled in, but usually they are loaded when PHP is loaded.