Hướng dẫn nested namespace php
To clear up any confusion regarding different syntax use, namespaces support only two syntaxes, either bracketed or simple-combination both will work. I suggest if you use one over the other, be consistent.
It creates a class
You can also use nested namespaces with simple-combination syntax (
PHP: FAQ: things you need to know about 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
CONNECT_OK = 1; The above example creates constant There are no user contributed notes for this page. (PHP 5 >= 5.3.0, PHP 7, PHP 8) The ability to refer to an external fully qualified name with an alias, or importing, is an important feature of namespaces. This is similar to the ability of unix-based filesystems to create symbolic links to a file or to a directory. PHP can alias(/import) constants, functions, classes, interfaces, traits, enums and namespaces. Aliasing is accomplished with the Example #1 importing/aliasing with the use operator
Note that for namespaced names (fully qualified namespace names containing namespace separator, such as PHP additionally supports a convenience shortcut to place multiple use statements on the same line Example #2 importing/aliasing with the use operator, multiple use statements combined
Importing is performed at compile-time, and so does not affect dynamic class, function or constant names. Example #3 Importing and dynamic names
In addition, importing only affects unqualified and qualified names. Fully qualified names are absolute, and unaffected by imports. Example #4 Importing and fully qualified names
Scoping rules for importing The Example #5 Illegal importing rule
toGreenlandic()
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