Notice (8): Undefined index: Statistics [APP/Model/Statistics.php, line 23]

                $stat = $this->find('first',array('conditions'=>array('Statistics.objet'=>$data["objet"],'Statistics.idobjet'=>$data["idobjet"],'Statistics.language'=>$data["language"],'Statistics.period'=>$p["period"],'Statistics.pvalue'=>$p["pvalue"])));

                if (count($stat["Statistics"])==0) {

$objet = 'shop'
$idobjet = '237'
$language = 'it'
$data = array(
	'objet' => 'shop',
	'idobjet' => '237',
	'language' => 'it',
	'value' => (int) 1
)
$periods = array(
	(int) 0 => array(
		'period' => 'global',
		'pvalue' => (int) 0
	),
	(int) 1 => array(
		'period' => 'year',
		'pvalue' => '25'
	),
	(int) 2 => array(
		'period' => 'month',
		'pvalue' => '1025'
	),
	(int) 3 => array(
		'period' => 'week',
		'pvalue' => '4425'
	)
)
$p = array(
	'period' => 'week',
	'pvalue' => '4425'
)
$stat = array()

Statistics::saveStat() - APP/Model/Statistics.php, line 23
ShopsController::view() - APP/Controller/ShopsController.php, line 174
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 499
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 193
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 118