php 安装libevent 附webserver代码

超酷小

　　/usr/local/php/bin/pecl install channel://pecl.php.net/libevent-0.0.4
　　添加 extension=libevent.so 到 php.ini
　　
　　
　　基于libevent的简单server 监听2000端口 打印回当前时间



1 $socket = stream_socket_server ('tcp://0.0.0.0:2000', $errno, $errstr);
2 stream_set_blocking($socket, 0);
3 $base = event_base_new();
4 $event = event_new();
5 event_set($event, $socket, EV_READ | EV_PERSIST, 'ev_accept', $base);
6 event_base_set($event, $base);
7 event_add($event);
8 event_base_loop($base);
9
10
11 function ev_accept($socket, $flag, $base) {
12   
13     $connection = stream_socket_accept($socket);
14     stream_set_blocking($connection, 0);
15   
16     $buffer = event_buffer_new($connection, 'ev_read', NULL, 'ev_error',  $connection);     
17     event_buffer_base_set($buffer, $base);
18     event_buffer_timeout_set($buffer, 30, 30);
19     event_buffer_watermark_set($buffer, EV_READ, 0, 0xffffff);
20     event_buffer_priority_set($buffer, 10);
21     event_buffer_enable($buffer, EV_READ | EV_PERSIST);
22   
23     $GLOBALS['_'] = $buffer;  //这个buffer一定要赋给个全局的变量 貌似是传值过程中的bug 或者5.3.8的闭包还是有问题？
24 }
25
26
27 function ev_error($buffer, $error, $connection) {
28     event_buffer_disable($buffer, EV_READ | EV_WRITE);                 
29     event_buffer_free($buffer);                 
30     fclose($connection);                 
31 }
32
33
34 function ev_read($buffer, $connection) {   
35 //      var_dump($connection);
36     while ($read = event_buffer_read($buffer, 256)) {
37        // var_dump($read);
38     }
39     fwrite($connection , date('Y-m-d H:i:s'));
40     ev_error($buffer , '' , $connection);
41 }
　　

　　通过浏览器访问下这台机器的2000端口 yeah~