On timeout the error callback is executed. This can be very valuable if you wanted to monitor inactivity on a socket.
You also need to use event_buffer_enable if you wanted to re-use the event listener.
Example:
<?php
function print_line($buf, $arg)
{
static $max_requests;
$max_requests++;
if ($max_requests == 10) {
event_base_loopexit($arg);
}
echo event_buffer_read($buf, 4096);
}
function error_func($buf, $what, $arg)
{
if ($what == (EVBUFFER_READ | EVBUFFER_TIMEOUT)) {
echo '5 seconds of inactivity'."\n";
event_buffer_enable($buf, EV_READ);
}
}
$base = event_base_new();
$eb = event_buffer_new(STDIN, "print_line", NULL, "error_func", $base);
event_buffer_timeout_set($eb, 5, NULL);
event_buffer_base_set($eb, $base);
event_buffer_enable($eb, EV_READ);
event_base_loop($base);
?>