(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.
dataOutput string.
max_bytesThe number of bytes to copy.
Returns the number of bytes copied, or -1 on failure.