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• 前端之家
• PHP
• PHP 多进程 解决难题

<div class="codebody" id="code55312">
#!/bin/env PHP
<?PHP
/ A example denoted muti-process application in PHP
@filename fork.PHP
@touch date Wed 10 Jun 2009 10:25:51 PM CST
@author Laruencelaruence@baidu.com
@license http://www.zend.com/license/3_0.txt PHP License 3.0
@version 1.0.0
/
/ 确保这个函数只能运行在SHELL中 */
if
(substr(PHP_sapi_name(),3) !== 'cli')
{
die("This Programe can only be run in CLI mode");
}
/* 关闭最大执行事件限制,在CLI模式下,这个语句其实不必要 /
set_time_limit(0);
$pid = posix_getpid(); //取得主进程ID
$user = posix_getlogin(); //取得用户名
echo
<<<EOD
USAGE: [command | expression]
input PHP code to execute by fork a new process
input quit to exit
Shell Executor version 1.0.0 by laruence
EOD;
while
(true)
{
$prompt = "\n{$user}$ ";
$input = readline($prompt);
readline_add_history($input);
if
($input == 'quit')
{
break;
}
process_execute($input . ';');
}
exit(0);
function
process_execute($input)
{
$pid = pcntl_fork(); //创建子进程
if
($pid == 0)
{//子进程
$pid = posix_getpid();
echo
" Process {$pid} was created,and Executed:\n\n";
eval($input); //解析命令
exit;
}
else
{//主进程
$pid = pcntl_wait($status,WUNTRACED); //取得子进程结束状态
if
(pcntl_wifexited($status))
{
echo
"\n\n Sub process: {$return['pid']} exited with {$status}";
}
}
}