I’ve been coding in PHP for a while and one of the first code libraries I stumbled across was PHPClasses.org which remains a well run and very useful library. One of my first contributions was a users online script, still in use on my site and I’m forever amazed that people keep writing new ones. When I review my server logs I can see that a script I wrote in 2001 for a tree menu is still being downloaded and tested – as it comes with sample links into my sites (gotta get traffic somehow ;))
These days you can download entire systems so the need for building blocks of code has lessened. What hasn’t changed is the requirement for little bits to enhance or extend the system you are using. And that’s where PHPClasses and the script libraries will continue to be valuable.