(PECL event >= 1.2.6-beta)
EventBuffer::copyout — Copies out specified number of bytes from the front of the buffer
public EventBuffer::copyout ( string &$data , int $max_bytes ) : int
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.
data Output string.
max_bytes The number of bytes to copy.
Returns the number of bytes copied, or -1 on failure.
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https://www.php.net/manual/en/eventbuffer.copyout.php