Question du test PHP7

<?php

$a = new \Some\namespace\ClassA;
$b = new \Some\namespace\ClassB;

<?php

use  Some\namespace\ClassA;
use  Some\namespace\ClassB;

$a = new ClassA;
$b = new ClassB;

<?php

use Some\namespace\{ClassA, ClassB};

$a = new ClassA;
$b = new ClassB;