PHP has over 1000 built-in functions that can be called directly, from within a script, to perform a specific task. Please check out our PHP reference for a complete overview.

Functions ¶ Table of Contents ¶ User-defined functions Function parameters and arguments Returning values Variable functions Internal (built-in) functions Anonymous functions Arrow Functions First …

Jun 12, 2025 · A function in PHP is a self-contained block of code that performs a specific task. It can accept inputs (parameters), execute a set of statements, and optionally return a value. PHP functions …

In this tutorial, you will learn about PHP functions and how to define user-defined functions.

Oct 29, 2025 · Learn everything about functions in PHP, including how to create user-defined and built-in functions, use parameters and return values, handle scope and errors, and write efficient, modular …

Like most of the programming languages, a function in PHP is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application …

Jul 4, 2025 · In this tutorial, you will learn what a PHP function is, built-in functions (such as PHP empty (), count (), etc.), user-defined functions, parameters, arguments & default values, returning values, …

All functions and classes in PHP have the global scope - they can be called outside a function even if they were defined inside and vice versa. PHP does not support function overloading, nor is it …

Continue your PHP journey by diving into functions. This course will teach you how to create reusable code with your own functions and utilize built-in PHP functions for both common and specialized …

There are two types of functions - library functions and user functions. Library functions, such as array_push are part of the PHP library and can be used by anyone. However, you may write your …