Declaring sub-namespaces
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
Much like directories and files, PHP namespaces also contain the ability to specify a hierarchy of namespace names. Thus, a namespace name can be defined with sub-levels:
Example #1 Declaring a single namespace with hierarchy
<?php namespace MyProject\Sub\Level; const CONNECT_OK = 1; class Connection { /* ... */ } function connect() { /* ... */ } ?>
MyProject\Sub\Level\CONNECT_OK
, class
MyProject\Sub\Level\Connection
and function
MyProject\Sub\Level\connect
.
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https://www.php.net/manual/en/language.namespaces.nested.php