(PHP 5 >= 5.5.0, PHP 7, PHP 8)
IntlBreakIterator::preceding โ Set the iterator position to the first boundary before an offset
$offset
ๆฌๅฝๆฐ่ฟๆช็ผๅๆๆกฃ๏ผไป ๆๅๆฐๅ่กจใ
offset
