Defining namespaces

(PHP 5 >= 5.3.0, PHP 7)

Examples:

Declaring a single namespace

Although any valid PHP code can be contained within a namespace, only the following types of code are affected by namespaces: classes (including abstracts and traits), interfaces, functions and constants.

Namespaces are declared using the namespace keyword. A file containing a namespace must declare the namespace at the top of the file before any other code - with one exception: the declare keyword.

<?php
namespace MyProject;
 
const CONNECT_OK = 1;
class Connection { /* ... */ }
function connect() { /* ... */ }
 
?>

Declaring a single namespace

<html>
<?php
namespace MyProject; // fatal error - namespace must be the first statement in the script
?>

Links:

http://php.net/manual/en/language.namespaces.definition.php

doc_php

2025-01-10 15:47:30

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