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A function is a block of statements that can be used repeatedly in a program. A function will not execute automatically when a page loads. A function will be executed by a call to the function. Create a Function. A user-defined function declaration starts with the keyword function, followed by the name of the function:
This lesson describes PHP Built-in Functions, User Defined Functions, Function Arguments and Returning Values.
In this tutorial, you will learn about PHP functions and how to define user-defined functions.
What is a PHP Function? A PHP function is a block of code that performs a specific task. Functions are declared using the function keyword, followed by the name of the function and a set of parentheses. Within the parentheses, you can specify the parameters that the function should accept.
To call a PHP function using an onclick event, you will need to use a little bit of JavaScript. Here's an example of how you can do it:
PHP Reference. The PHP reference contains different categories of all PHP functions, keywords and constants, along with examples.
In this tutorial you will learn how to define and call a custom function in PHP to save the repetition of code and make your code much easier to maintain.
