PHP Functions

Example 1: Built-in Function

Original text: This is my assignment 3 Functions page.

Length of the text using strlen(): 39

Example 2: User-defined Function

The square of 5 is: 25

Zacks explonation on PHP Functions

Functions in PHP allow you to group reusable code into a block that can be executed when needed. They help improve code efficiency, reduce redundancy, and make programs more maintainable.

PHP provides built-in functions, such as strlen(), which calculates the length of a string. You can also create your own functions, like square(), which takes an argument and returns a computed result.

Functions can take parameters, return values, and be called multiple times in a program, making them an essential part of PHP development.