PHP has no use of this keyword solution

PHP has no use this keyword
Some of the PHP data I read seems to have no use. But just looking at a frame, I found that use was used.

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I guess not.
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That's not clear.
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namespace Foo;
Use My\full\classname as another;

The same as use My\full\nsname as Nsname
Use My\full\nsname;

Importing a global class
Use Arrayobject;

$obj = new Namespace\another; Instantiates object of Class Foo\another
$obj = new Another; Instantiates object of Class My\full\classname
Nsname\subns\func (); Calls function My\full\nsname\subns\func
$a = new Arrayobject (Array (1)); Instantiates object of Class Arrayobject
Without the ' use arrayobject ' we would instantiate an object of class Foo\arrayobject
?>
It's like defining an alias for a class:

Use CLASS3 as another;
Use CLASS3 as Another1;
Use CLASS3 as Another2;

$obj = new Another; //
$obj = new Another1; //
$obj = new Another2; //

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PHP 5.3+

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