EventBuffer::pullup
(PECL event >= 1.2.6-beta)
EventBuffer::pullup — Linearizes data within buffer and returns it's contents as a string
說明
public
EventBuffer::pullup(
int
$size
): string
"Linearizes" the first
size
bytes of the buffer, copying or moving them as needed to ensure that they
are all contiguous and occupying the same chunk of memory. If size is
negative, the function linearizes the entire buffer.
警告
Calling EventBuffer::pullup() with a large size can be quite slow, since it potentially needs to copy the entire buffer's contents.
參數
-
size -
The number of bytes required to be contiguous within the buffer.
返回值
If
size
is greater than the number of bytes in the buffer, the function returns
null. Otherwise,
EventBuffer::pullup()
returns string.
參見
- EventBuffer::copyout() - Copies out specified number of bytes from the front of the buffer
- EventBuffer::drain() - Removes specified number of bytes from the front of the buffer without copying it anywhere
- EventBuffer::read() - Read data from an evbuffer and drain the bytes read
- EventBuffer::readLine() - Extracts a line from the front of the buffer
- EventBuffer::appendFrom() - Moves the specified number of bytes from a source buffer to the end of the current buffer