| protected checksum_code39 ( $code ) : char | ||
| $code | (string) code to represent. | |
| return | char | checksum. |
protected function checksum_code39($code)
{
$chars = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%');
$sum = 0;
$clen = strlen($code);
for ($i = 0; $i < $clen; ++$i) {
$k = array_keys($chars, $code[$i]);
$sum += $k[0];
}
$j = $sum % 43;
return $chars[$j];
}