The length of "Hello, my name is Ashley!" is: 25 characters.
The sum of 10 and 7 is: 17
Functions in PHP are like mini-programs that perform specific tasks. User-defined functions are like custom recipes you create. You can give them ingredients (inputs), they follow your cooking steps (code), and they can give you a finished dish (output). Built-in functions are like ready-made recipes in a cookbook. You can use these recipes without writing them from scratch.