private function getMultiple($max = 7, $outputFormat = 'json')
{
$output = [];
$n = 0;
$int = new \DateInterval('P1D');
while (true) {
$this->doCalc();
if (is_null($this->output['east'])) {
break;
}
$output[] = $this->output;
$n++;
if (!is_null($max) && $n >= $max) {
break;
}
$this->date->add($int);
}
if (is_null($this->output['west'])) {
\lib\Cache::tillDow();
} else {
\lib\Cache::permanent();
}
if (is_null($outputFormat)) {
return $output;
} else {
switch ($outputFormat) {
case 'json':
default:
header('Content-Type: application/json');
echo json_encode($output);
}
}
}