/**
* check message
*/
protected function _checkData()
{
// set is unicode to false
$this->_isUnicode = FALSE;
// set zero size
$this->_size = 0;
// check message
for ($i = 0; $i < mb_strlen($this->_data, 'UTF-8'); $i++) {
// get byte
$byte = Helper::order(mb_substr($this->_data, $i, 1, 'UTF-8'));
if ($byte > 0xc0) {
$this->_isUnicode = TRUE;
}
$this->_size++;
}
}
