如何使用PHP编写daemon process
kevin.Zhu 发布于：2013-1-16 15:27 分类：Php 有 13 人浏览，获得评论 0 条
http://www.cnblogs.com/leoo2sk/archive/2011/11/09/write-daemon-with-php.html
<?php
//Accpet the http client request and generate response content.
//As a demo, this function just send "PHP HTTP Server" to client.
function handle_http_request($address, $port)
{
$max_backlog = 16;
$res_content = "HTTP/1.1 200 OK
Content-Length: 15
Content-Type: text/plain; charset=UTF-8
PHP HTTP Server";
$res_len = strlen($res_content);
//Create, bind and listen to socket
if(($socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === FALSE)
{
echo "Create socket failed!\n";
exit;
}
if((socket_bind($socket, $address, $port)) === FALSE)
{
echo "Bind socket failed!\n";
exit;
}
if((socket_listen($socket, $max_backlog)) === FALSE)
{
echo "Listen to socket failed!\n";
exit;
}
//Loop
while(TRUE)
{
if(($accept_socket = socket_accept($socket)) === FALSE)
{
continue;
}
else
{
socket_write($accept_socket, $res_content, $res_len);
socket_close($accept_socket);
}
}
}
//Run as daemon process.
function run()
{
if(($pid1 = pcntl_fork()) === 0)
//First child process
{
posix_setsid(); //Set first child process as the session leader.
if(($pid2 = pcntl_fork()) === 0)
//Second child process, which run as daemon.
{
//Replaced with your own domain or address.
handle_http_request('www.codinglabs.org', 9999);
}
else
{
//First child process exit;
exit;
}
}
else
{
//Wait for first child process exit;
pcntl_wait($status);
}
}
//Entry point.
run();
?>