DOMCharacterData->substringData()
(No version information available, might be only in CVS)
DOMCharacterData->substringData() — Extracts a range of data from the node
说明
DOMCharacterData
string substringData
( int $offset
, int $count
)
Returns the specified substring.
参数
- offset
-
Start offset of substring to extract.
- count
-
The number of characters to extract.
返回值
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.
错误／异常
- 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.
CDN