What is a function?

The concept of functions is something that a beginning programmer may be wary of or think of suspiciously, but in fact they will become more and more useful the more you program.

A function is just a container for a block of code. Functions are powerful because they enable you to create a section of code that can, if well-written, be copied and pasted from program to program saving you writing it each time.

In addition it makes debugging easier as you can track problems to individual blocks of code - the functions.

And also very attractive is that with a function you don't necessarily need to know how it works once written to use it - just like all the built-in functions in PHP, you can make it available to others and they can copy and paste it and it should work.

Here is a simple function in action:


<?php



function myfirstfunction() {

echo "My first function!";

}

myfirstfunction(); // call the function

?>

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