PHP 写守护进程，实例分享

来源：互联网发布：淘宝客推广软文范例编辑：程序博客网时间：2024/06/17 22:42
http://netkiller.github.io/journal/php.daemon.html

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<?php
/*
 * PHP Daemon sample.
 * Home: http://netkiller.github.io
 * Author: netkiller<netkiller@msn.com>
 *
*/
classLogger {
     
    publicfunction__construct(/*Logging $logger*/) {
    }
 
    publicfunctionlogger($type,$message) {
        $log= sprintf ( "%s\t%s\t%s\n",date('Y-m-d H:i:s' ), $type,$message);
        file_put_contents( sprintf(__DIR__."/../log/sender.%s.log",date('Y-m-d')),$log, FILE_APPEND );
    }
     
}
 
finalclassSignal{ 
    publicstatic$signo = 0;
    protectedstatic$ini = null;
    publicstaticfunction set($signo){
        self::$signo=$signo;
    }
    publicstaticfunction get(){
        return(self::$signo);
    }
    publicstaticfunction reset(){
        self::$signo= 0;
    }
}
 
classTestextendsLogger {
    //public static $signal = null;
     
    publicfunction__construct() {
        //self::$signal == null;
    }
    publicfunctionrun(){
        while(true){
            pcntl_signal_dispatch();
            printf(".");
            sleep(1);
            if(Signal::get() == SIGHUP){
                Signal::reset();
                break;
            }
        }
        printf("\n");
    }
}
 
classDaemonextendsLogger {
    /* config */
    constLISTEN = "tcp://192.168.2.15:5555";
    constpidfile   = __CLASS__;
    constuid       = 80;
    constgid       = 80;
    constsleep = 5;
 
    protected$pool    = NULL;
    protected$config  = array();
 
    publicfunction__construct($uid,$gid,$class) {
        $this->pidfile = '/var/run/'.basename(get_class($class),'.php').'.pid';
        //$this->config = parse_ini_file('sender.ini', true); //include_once(__DIR__."/config.php");
        $this->uid = $uid;
        $this->gid = $gid;
        $this->class=$class;
        $this->classname = get_class($class);
         
        $this->signal();
    }
    publicfunctionsignal(){
 
        pcntl_signal(SIGHUP, function($signo)/*use ()*/{
            //echo "\n This signal is called. [$signo] \n";
            printf("The process has been reload.\n");
            Signal::set($signo);
        });
 
    }
    privatefunctiondaemon(){
        if(file_exists($this->pidfile)) {
            echo"The file $this->pidfile exists.\n";
            exit();
        }
 
        $pid= pcntl_fork();
        if($pid== -1) {
             die('could not fork');
        }elseif($pid) {
             // we are the parent
             //pcntl_wait($status); //Protect against Zombie children
            exit($pid);
        }else{
            file_put_contents($this->pidfile,getmypid());
            posix_setuid(self::uid);
            posix_setgid(self::gid);
            return(getmypid());
        }
    }
    privatefunctionrun(){
 
        while(true){
             
            printf("The process begin.\n");
            $this->class->run();
            printf("The process end.\n");
             
        }
    }
    privatefunctionforeground(){
        $this->run();
    }
    privatefunctionstart(){
        $pid=$this->daemon();
        for(;;){
            $this->run();
            sleep(self::sleep);
        }
    }
    privatefunctionstop(){
 
        if(file_exists($this->pidfile)) {
            $pid=file_get_contents($this->pidfile);
            posix_kill($pid, 9);
            unlink($this->pidfile);
        }
    }
    privatefunctionreload(){
        if(file_exists($this->pidfile)) {
            $pid=file_get_contents($this->pidfile);
            //posix_kill(posix_getpid(), SIGHUP);
            posix_kill($pid, SIGHUP);
        }
    }  
    privatefunctionstatus(){
        if(file_exists($this->pidfile)) {
            $pid=file_get_contents($this->pidfile);
            system(sprintf("ps ax | grep %s | grep -v grep",$pid));
        }
    }
    privatefunctionhelp($proc){
        printf("%s start | stop | restart | status | foreground | help \n",$proc);
    }
    publicfunctionmain($argv){
 
        if(count($argv) < 2){
            $this->help($argv[0]);
            printf("please input help parameter\n");
            exit();
        }
        if($argv[1] === 'stop'){
            $this->stop();
        }elseif($argv[1] === 'start'){
            $this->start();
        }elseif($argv[1] === 'restart'){
            $this->stop();
            $this->start();
        }elseif($argv[1] === 'status'){
            $this->status();
        }elseif($argv[1] === 'foreground'){
            $this->foreground();
        }elseif($argv[1] === 'reload'){
            $this->reload();
        }else{
            $this->help($argv[0]);
        }
    }
}
 
$daemon=newDaemon(80,80,newTest());
$daemon->main($argv);
?>
这里例子实现start, stop,reload,status等等。
该文章转自OSChina
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