Functions Explained and Examples

Functions in PHP are blocks of code that perform specific tasks. PHP provides built-in functions, and programmers can also create user-defined functions. Built-in functions are ready to use, while user-defined functions can be customized for any purpose.

Built-in Function Example

Original String: I LOVE COUNTING MY STRING VARIABLES

Using strlen() to count characters: 35

User-defined Function Example

Hello, Timothy! Welcome to PHP functions.