(PECL event >= 1.2.6-beta)
EventBuffer::copyout — Copies out specified number of bytes from the front of the buffer
Behaves just like EventBuffer::read() , but does not drain any data from the buffer. I.e. it copies the first
max_bytes bytes from the front of the buffer into
data . If there are fewer than
max_bytes bytes available, the function copies all the bytes there are.
The number of bytes to copy.
Returns the number of bytes copied, or
-1 on failure.