(PECL event >= 1.6.0)
EventBuffer::substr — Substracts a portion of the buffer data
$start
[,
int
$length
] ) : string
Substracts up to
length
bytes of the buffer data beginning at
start
position.
start
The start position of data to be substracted.
length
Maximum number of bytes to substract.
Returns the data substracted as a
string
on success, or FALSE on failure.