PHP - Manual: DOMCharacterData::substringData
2024-12-22
(PHP 5, PHP 7, PHP 8)
DOMCharacterData::substringData — Extracts a range of data from the node
$offset
, int $count
): string|falseReturns the specified substring.
offset
Start offset of substring to extract.
count
The number of characters to extract.
The specified substring. If the sum of offset
and count
exceeds the length, then all 16-bit units
to the end of the data are returned.
DOM_INDEX_SIZE_ERR
Raised if offset
is negative or greater than the
number of 16-bit units in data, or if count
is
negative.
官方地址:https://www.php.net/manual/en/domcharacterdata.substringdata.php