PHP import classes in namespace

A class declared in a namespace （space.php）：

<?php
        namespace mspace;
            class mclass
            {
                public function __construct()
                {
                    echo __METHOD__."\n";
                }

            }

?>

Here is in another file （use_space.php） Methods that use this class in ：

<?php
require_once "./space.php";

// The first way to use it , Direct reference suffix 
    use \mspace\mclass;
    $obj = new mclass();

// The second way to use it , Use the alias 
    use \mspace\mclass as mclass1;
    $obj1 = new mclass1();

 ?>

In command line （php 5.5.36） Run in use_space.php, Output is ：

mspace\mclass::__construct
mspace\mclass::__construct

You can see mclass The constructor and mclass equally , Because it's just an alias , Not a real class .

That is, the constructor gets the correct call .