本文实例讲述了php进程间通讯的方法。分享给大家供大家参考，具体如下：

php单进程单线程处理批量任务太慢了,受不鸟了,但是php不能多线程,最终选择了多进程处理批量任务.

php多进程主要使用for进行分裂,然后利用的unix/linux的信号量进行进程间通讯.

本例使用的是:生产者=>消费者=>收集器,的模式.

// ===== 全局变量 =====

// ipc进程间通讯

$key = ftok(__FILE__, "a");

$queue = msg_get_queue($key);

// 进程ID

$producer_pid = 0;

$consumers_pid = array();

$collector_pid = posix_getpid();

// ===== 消费者 =====

for ($i=0; $i < 2; $i++) {

$consumer_pid = pcntl_fork();

if ($consumer_pid == -1) {

exit("could not fork!\n");

} else if ($consumer_pid) {

// pcntl_wait($status);

echo "consumer_pid: $consumer_pid\n";

$consumers_pid[] = $consumer_pid;

} else {

$pid = posix_getpid();

echo "consumer_pid: $pid start\n";

while (true) {

msg_receive($queue, $pid, $msgtype, 1024, $message);

if ($message == "exit") {

break;

}

// 数据处理

$n = intval($message);

msg_send($queue, $collector_pid, $n * $n);

}

exit("consumer ok!\n");

}

}

// ===== 产生者 =====

$producer_pid = pcntl_fork();

if ($producer_pid == -1) {

exit("could not fork!\n");

} else if ($producer_pid) {

// pcntl_wait($status);

echo "producer_pid: $producer_pid\n";

} else {

$pid = posix_getpid();

echo "producer_pid: $pid start\n";

$n = 0;

for ($i=0; $i < 10; $i++) {

foreach ($consumers_pid as $consumer_pid) {

$n++;

msg_send($queue, $consumer_pid, $n);

}

sleep(1);

}

foreach ($consumers_pid as $consumer_pid) {

msg_send($queue, $consumer_pid, "exit");

}

sleep(1);

msg_send($queue, $collector_pid, "exit");

exit("producer ok!\n");

}

// ===== 收集器 =====

while (true) {

msg_receive($queue, $collector_pid, $msgtype, 1024, $message);

if ($message == "exit") {

break;

}

echo sprintf("% 5d: %d\n", $msgtype, $message);

}

exit("collector ok!\n");

希望本文所述对大家PHP程序设计有所帮助。