https://www.php.net/manual/uk/intlchar.getintpropertymaxvalue.php
PHP: IntlChar::getIntPropertyMaxValue - Manual
Get the max value for a Unicode property
phpmanual
https://www.php.net/manual/de/intlchar.getintpropertymaxvalue.php
PHP: IntlChar::getIntPropertyMaxValue - Manual
Get the max value for a Unicode property
phpmanual