Search results
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: Example.
- PHP Tutorial
Learn PHP. PHP is a server scripting language, and a...
- PHP Tutorial
Learn PHP. PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Easy Learning with "PHP Tryit".
This lesson describes PHP Built-in Functions, User Defined Functions, Function Arguments and Returning Values.
The "function" keyword is used in PHP to define a function that can be reused throughout your code. In this article, we will explore the syntax and usage of the "function" keyword in depth, and provide plenty of examples to help you master this important PHP feature.
Functions Table of Contents. User-defined functions; Function arguments; Returning values; Variable functions; Internal (built-in) functions; Anonymous functions; Arrow Functions; First class callable syntax
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.
<?php echo substr ("Hello world",6); ?> Try it Yourself » Definition and Usage. The substr () function returns a part of a string. Syntax. substr (string,start,length) Parameter Values. Technical Details. More Examples. Example. Using the start parameter with different positive and negative numbers:
