PHP: 名前空間

<?php
namespace my\ns;

class MyClass {
  function __toString() {
    return "from MyClass";
  }
}

function myFunc() {
  return "from myFunc";
}

const MY_CONST = "from MY_CONST";

<?php
include('my_ns.php');

echo new my\ns\MyClass . "\n";
echo my\ns\myFunc() . "\n";
echo my\ns\MY_CONST . "\n";

<?php
include('my_ns.php');

use my\ns\MyClass;
use function my\ns\myFunc;
use const my\ns\MY_CONST;

echo new MyClass . "\n";
echo myFunc() . "\n";
echo MY_CONST . "\n";

<?php
include('my_ns.php');

use my\ns\MyClass as MyC;
use function my\ns\myFunc as myF;
use const my\ns\MY_CONST as MY_C;

echo new MyC . "\n";
echo myF() . "\n";
echo MY_C . "\n";

<?php
namespace my\ns;

class MyClassA { function __toString() { return "from MyClassA"; } }
class MyClassB { function __toString() { return "from MyClassB"; } }
class MyClassC { function __toString() { return "from MyClassC"; } }

function myFuncA() { return "from myFuncA"; }
function myFuncB() { return "from myFuncB"; }
function myFuncC() { return "from myFuncC"; }

const MY_CONST_A = "from MY_CONST_A";
const MY_CONST_B = "from MY_CONST_B";
const MY_CONST_C = "from MY_CONST_C";

<?php
include('my_ns.php');

use my\ns\{MyClassA, MyClassB, MyClassC as MyCC};
use function my\ns\{myFuncA, myFuncB, myFuncC as myFC};
use const my\ns\{MY_CONST_A, MY_CONST_B, MY_CONST_C as MY_C_C};

echo new MyClassA . "\n";
echo new MyClassB . "\n";
echo new MyCC . "\n";
echo myFuncA() . "\n";
echo myFuncB() . "\n";
echo myFC() . "\n";
echo MY_CONST_A . "\n";
echo MY_CONST_B . "\n";
echo MY_C_C . "\n";