thinkPHP5.0框架命名空间代码详解

// 错误的用法
$class = new stdClass();
$xml = new SimpleXmlElement($xmlstr);
// 正确的用法
$class = new \stdClass();
$xml = new \SimpleXmlElement($xmlstr);

namespace think\cache\driver;
class File
{
}

$class = new \think\cache\driver\File();

$class = new \Think\Cache\Driver\File();

Route::get('hello','index/hello');

use think\Route

\think\Route::get('hello','index/hello');

namespace my;
class Test
{
 public function sayHello()
 {
  echo 'hello';
 }
}

$Test = new \my\Test();
$Test->sayHello();

define('EXTEND_PATH','../vendor/');

\think\Loader::addNamespace('my','../application/extend/my/');

\think\Loader::addNamespace([
 'my' => '../application/extend/my/',
 'org' => '../application/extend/org/',
]);

'root_namespace' => [
 'my' => '../application/extend/my/',
 'org' => '../application/extend/org/',
]

namespace app\index\model;
class User extends \think\Model
{
}

namespace app\admin\Event;
class User
{
}

'app_namespace' => 'application',

namespace application\index\model;
class User extends \think\Model
{
}

namespace app\index\model;
use think\Model;
class User extends Model
{
}

namespace app\index\controller;
use app\index\model\User;
class Index
{
 public function index()
 {
  $user = new User();
 }
}

\think\Loader::addNamespaceAlias('model','app\index\model');

namespace app\index\controller;
use model\User;
class Index
{
 public function index()
 {
  $user = new User();
 }
}