* $r->setOptions(array('cookies' => array('lang' => 'de')));
* $r->addPostFields(array('user' => 'mike', 'pass' => 's3c|r3t'));
* $r->addPostFile('image', 'profile.jpg', 'image/jpeg');
* $r->setOptions(array('cookies' => array('lang' => 'de')));
* $r->addPostFields(array('user' => 'mike', 'pass' => 's3c|r3t'));
* $r->addPostFile('image', 'profile.jpg', 'image/jpeg');