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Laravel Request, Response and Redirect

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// Request
// url: http://xx.com/aa/bb
 Request::url();
// path: /aa/bb
 Request::path();
// getRequestUri: /aa/bb/?c=d
 Request::getRequestUri();
// Returns user's IP
 Request::getClientIp();
// getUri: http://xx.com/aa/bb/?c=d
 Request::getUri();
// getQueryString: c=d
 Request::getQueryString();
// Get the port scheme of the request (e.g., 80, 443, etc.)
 Request::getPort();
// Determine if the current request URI matches a pattern
 Request::is('foo/*');
// Get a segment from the URI (1 based index)
 Request::segment(1);
// Retrieve a header from the request
 Request::header('Content-Type');
// Retrieve a server variable from the request
 Request::server('PATH_INFO');
// Determine if the request is the result of an AJAX call
 Request::ajax();
// Determine if the request is over HTTPS
 Request::secure();
// Get the request method
 Request::method();
// Checks if the request method is of specified type
 Request::isMethod('post');
// Get raw POST data
 Request::instance()->getContent();
// Get requested response format
 Request::format();
// true if HTTP Content-Type header contains */json
 Request::isJson();
// true if HTTP Accept header is application/json
 Request::wantsJson();

// Responses 
return Response::make($contents);
return Response::make($contents, 200);
return Response::json(array('key' => 'value'));
return Response::json(array('key' => 'value'))
    ->setCallback(Input::get('callback'));
return Response::download($filepath);
return Response::download($filepath, $filename, $headers);
// Create a response and modify a header value
$response = Response::make($contents, 200);
$response->header('Content-Type', 'application/json');
return $response;
// Attach a cookie to a response
 return Response::make($content)
    ->withCookie(Cookie::make('key', 'value'));

// Redirects 
return Redirect::to('foo/bar');
return Redirect::to('foo/bar')->with('key', 'value');
return Redirect::to('foo/bar')->withInput(Input::get());
return Redirect::to('foo/bar')->withInput(Input::except('password'));
return Redirect::to('foo/bar')->withErrors($validator);
// Create a new redirect response to the previous location
 return Redirect::back();
// Create a new redirect response to a named route
 return Redirect::route('foobar');
return Redirect::route('foobar', array('value'));
return Redirect::route('foobar', array('key' => 'value'));
// Create a new redirect response to a controller action
 return Redirect::action('FooController@index');
return Redirect::action('FooController@baz', array('value'));
return Redirect::action('FooController@baz', array('key'=> 'value'));
// If intended redirect is not defined, defaults to foo/bar.
 return Redirect::intended('foo/bar');