<?php
namespace Vendor\Package;

use FooClass;

namespace Vendor\Package;
use BarClass as Bar;

namespace Vendor\Package;


    use BarClass as Bar;

namespace Vendor
\Package;

namespace Vendor\
Package;
namespace Vendor\

Package;
namespace Vendor\Package;

$call = namespace\function_name();
echo namespace\CONSTANT_NAME;
// Something which is not a blank line.
