PHP Manual
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# DOMCharacterData->substringData()

(no version information, might be only in CVS)

DOMCharacterData->substringData() -- Extracts a range of data from the node

## 说明

class 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.

## 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.

## 参见

DOMCharacterData->appendData()
DOMCharacterData->deleteData()
DOMCharacterData->insertData()
DOMCharacterData->replaceData()

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DOMCharacterData->replaceData() | 上一级 | DOMComment->__construct()