与libevent的多进程php

<?php
$socket = stream_socket_server (\'tcp://0.0.0.0:2000\', $errno, $errstr);
stream_set_blocking($socket, 0);
$base = event_base_new();
$event = event_new();
event_set($event, $socket, EV_READ | EV_PERSIST, \'ev_accept\', $base);
event_base_set($event, $base);
event_add($event);
event_base_loop($base);

$GLOBALS[\'connections\'] = array();
$GLOBALS[\'buffers\'] = array();

function ev_accept($socket, $flag, $base) {
    static $id = 0;

    $connection = stream_socket_accept($socket);
    stream_set_blocking($connection, 0);

    $id += 1;

    $buffer = event_buffer_new($connection, \'ev_read\', NULL, \'ev_error\', $id);
    event_buffer_base_set($buffer, $base);
    event_buffer_timeout_set($buffer, 30, 30);
    event_buffer_watermark_set($buffer, EV_READ, 0, 0xffffff);
    event_buffer_priority_set($buffer, 10);
    event_buffer_enable($buffer, EV_READ | EV_PERSIST);

    // we need to save both buffer and connection outside
    $GLOBALS[\'connections\'][$id] = $connection;
    $GLOBALS[\'buffers\'][$id] = $buffer;
}

function ev_error($buffer, $error, $id) {
    event_buffer_disable($GLOBALS[\'buffers\'][$id], EV_READ | EV_WRITE);
    event_buffer_free($GLOBALS[\'buffers\'][$id]);
    fclose($GLOBALS[\'connections\'][$id]);
    unset($GLOBALS[\'buffers\'][$id], $GLOBALS[\'connections\'][$id]);
}

function ev_read($buffer, $id) {
    while ($read = event_buffer_read($buffer, 256)) {
        var_dump($read);
    }
}
?> 

     function ev_read($buffer, $id) {
            while ($read = event_buffer_read($buffer, 256)) {
    $pid = pcntl_fork();
        switch ($pid) {
        case -1: // Error
            die(\'Fork failed, your system is b0rked!\');
            break;
        case 0: // Child
                event_buffer_write($buffer,\"asdawdasd\");

        exit(0);
            break;


            }
   } }