In this tutorial we will learn about Functions in PHP. Function is block of code which perform a specific task and which we can use multiple times without writing it again and again. For example you want to perform some mathematical task in your code several times. It mean you have to write same code to perform that mathematical task. But by using function you only have to write your mathematical task code once and you can use it any number of times.
Lets check how make and call a function in Program. To make function just write function name with () and then write body of function.