Element::checkImageProperty

static function checkImageProperty(array $property)
{
	if (empty($property['FILE_TYPE']))
		return false;
	$property['FILE_TYPE'] = mb_strtolower(str_replace(' ', '', trim($property['FILE_TYPE'])));
	if (empty($property['FILE_TYPE']))
		return false;
	$rawFileTypes = explode(',', $property['FILE_TYPE']);
	if (empty($rawFileTypes))
		return false;
	$rawFileTypes = array_fill_keys($rawFileTypes, true);
	if (
		!isset($rawFileTypes['jpg'])
		&& !isset($rawFileTypes['gif'])
		&& !isset($rawFileTypes['png'])
		&& !isset($rawFileTypes['jpeg'])
	)
		return false;
	return true;
}