在某些情况，我们要使用 PHP 进行重复的任务，但是只能完成单次，叠加起来的话执行时间会非常长，所以就要将任务分配到多个线程来分别执行。但 PHP 在默认情况下是没有多线程的，必须要使用 pthreads PHP 扩展，这个扩展能真正的支持和实现多线程。多线程在处理重复性的循环任务，能够大大缩短程序执行时间。要使用这个扩展，就必须使用线程安全的版本。在编译 PHP 的时候， –enable-maintainer-zts ​这个选项是必须的，其他的根据自己的需求来添加

error_reporting(E_ALL);
class vote extends Thread {

public $res
= '';

public $url
= array();

public $name
= '';

public $runing = false;

public $lc
= false;


public function __construct($name) {

$this->res
= '暂无,第一次运行.';

$this->param
= 0;

$this->lurl
= 0;

$this->name
= $name;

$this->runing = true;

$this->lc
= false;

}


public function run() {

while ($this->runing) {


if ($this->param != 0) {

$nt
= rand(1, 10);

echo time()."线程[{$this->name}]收到任务参数::{$this->param},需要{$nt}秒处理数据.n";

$this->res
= rand(100, 999);

//sleep($nt);

$this->lurl = $this->param;

$this->param
= '';

} else {

echo time()."线程[{$this->name}]等待任务..n";

}

sleep(1);

}

}
}

//这里创建线程池.
$pool[] = new vote('a');
$pool[] = new vote('b');
$pool[] = new vote('c');
$pool[] = new vote('d');
$pool[] = new vote('e');
$pool[] = new vote('f');
$pool[] = new vote('g');
$pool[] = new vote('h');
$pool[] = new vote('i');
$pool[] = new vote('j');

//启动所有线程,使其处于工作状态
foreach ($pool as $w) {

$w->start();
}

//派发任务给线程
for ($i = 0; $i < 100; $i++) {

$worker_content = rand(10, 99);

while (true) {

foreach ($pool as $worker) {

//参数为空则说明线程空闲

if ($worker->param=='') {

$worker->param = $worker_content;

echo "[{$worker->name}]线程空闲,放入参数{$worker_content},上次参数[{$worker->lurl}]结果[{$worker->res}].n";

break 2;

}

}

sleep(1);

}
}
echo "所有线程派发完毕,等待执行完成.n";

//等待所有线程运行结束
while (count($pool)) {

//遍历检查线程组运行结束

foreach ($pool as $key => $threads) {

if ($worker->param=='') {

echo "[{$threads->name}]线程空闲,上次参数[{$threads->lurl}]结果[{$threads->res}].n";

echo "[{$threads->name}]线程运行完成,退出.n";

//设置结束标志

$threads->runing = false;

unset($pool[$key]);

}

}

echo "等待中...n";

sleep(1);
}
echo "所有线程执行完毕.n";
?>

error_reporting(E_ALL);
class vote extends Thread {

public $res
= '';

public $url
= array();

public $name
= '';

public $runing = false;

public $lc
= false;


public function __construct($name) {

$this->res
= '暂无,第一次运行.';

$this->param
= 0;

$this->lurl
= 0;

$this->name
= $name;

$this->runing = true;

$this->lc
= false;

}


public function run() {

while ($this->runing) {


if ($this->param != 0) {

$nt
= rand(1, 10);

echo time()."线程[{$this->name}]收到任务参数::{$this->param},需要{$nt}秒处理数据.n";

$this->res
= rand(100, 999);

//sleep($nt);

$this->lurl = $this->param;

$this->param
= '';

} else {

echo time()."线程[{$this->name}]等待任务..n";

}

sleep(1);

}

}
}

//这里创建线程池.
$pool[] = new vote('a');
$pool[] = new vote('b');
$pool[] = new vote('c');
$pool[] = new vote('d');
$pool[] = new vote('e');
$pool[] = new vote('f');
$pool[] = new vote('g');
$pool[] = new vote('h');
$pool[] = new vote('i');
$pool[] = new vote('j');

//启动所有线程,使其处于工作状态
foreach ($pool as $w) {

$w->start();
}

//派发任务给线程
for ($i = 0; $i < 100; $i++) {

$worker_content = rand(10, 99);

while (true) {

foreach ($pool as $worker) {

//参数为空则说明线程空闲

if ($worker->param=='') {

$worker->param = $worker_content;

echo "[{$worker->name}]线程空闲,放入参数{$worker_content},上次参数[{$worker->lurl}]结果[{$worker->res}].n";

break 2;

}

}

sleep(1);

}
}
echo "所有线程派发完毕,等待执行完成.n";

//等待所有线程运行结束
while (count($pool)) {

//遍历检查线程组运行结束

foreach ($pool as $key => $threads) {

if ($worker->param=='') {

echo "[{$threads->name}]线程空闲,上次参数[{$threads->lurl}]结果[{$threads->res}].n";

echo "[{$threads->name}]线程运行完成,退出.n";

//设置结束标志

$threads->runing = false;

unset($pool[$key]);

}

}

echo "等待中...n";

sleep(1);
}
echo "所有线程执行完毕.n";
?>这段代码首先是新建了10个线程池，将他们都激活后，按照任务的数量来分配到每个线程上。当一个线程完成他的工作后，继续拿到下个任务继续执行，直到所有任务都完成为止。最后判断是否全部执行完了，并停止线程的运行，释放内存。以上就是本文的全部内容，希望对大家的学习有所帮助。