Hopefully you are pretty secure with the basics of PHP by now. If not, you should read part 1 and part 2 of this series. This part is about functions. What are they; how do you use them; and how can you utilise your own functions? Functions can be a great tool to speed up your coding and to make applications run much more smoothly, so let’s go!

What are functions?

Functions are blocks of code that can be called upon at any point in the script to perform a particular task or ‘function’. There are more than 750 functions built into a normal install of PHP, but you can define your own too, making them very versatile and easy. More >