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How to add functions to php

2025-04-01 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article mainly explains "how to add functions to php". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to add functions to php.

Php add function method: 1, create a PHP sample file; 2, through the "function functionName () {...}" way to create a function.

This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer

How does php add functions?

Create the PHP function:

The function is executed by calling the function.

Grammar

PHP function criteria:

The name of the function should indicate its function

The function name begins with a letter or underscore (cannot start with a number)

Example

A simple function that outputs my name when it is called:

Example

Output:

My name is Kai Jim Refsnes

PHP function-add parameters

To add more functionality to the function, we can add parameters, which are similar to variables.

Parameters are specified in parentheses after the function name.

The following example outputs a different first name, but the last name is the same:

Example

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