文字
EventBuffer::substr
(PECL event >= 1.6.0)
EventBuffer::substr — Substracts a portion of the buffer data
说明
public string EventBuffer::substr
( int
$start
[, int $length
] )
Substracts up to
length
bytes of the buffer data beginning at
start
position.
参数
-
start -
The start position of data to be substracted.
-
length -
Maximum number of bytes to substract.
返回值
Returns the data substracted as a
string
on success, or FALSE on failure.
参见
- EventBuffer::read() - Read data from an evbuffer and drain the bytes read