(PECL haru >= 0.0.1)
HaruEncoder::getByteType — Get the type of the byte in the text
$text
, int $index
)Get the type of the byte in the text.
text
The text.
index
The position in the text.
Returns the type of the byte in the text on the specified position. The result is one of the following values:
HaruEncoder::BYTE_TYPE_SINGLE - single byte
character.
HaruEncoder::BYTE_TYPE_LEAD - lead byte of a
double-byte character.
HaruEncoder::BYTE_TYPE_TRAIL - trailing byte of a
double-byte character.
HaruEncoder::BYTE_TYPE_UNKNOWN - invalid encoder or
cannot detect the byte type.
发生错误时抛出 HaruException 异常。