pthreads - 求助,php使用Pthread进行多进程的问题?
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2022-05-02 15:31:37
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以下代码运行没有问题,感觉$urls数组有多少数据,就生产多少进程,如果有几万个数据,是不是会有几万个进程?
如果要设置成只有10个进程来处理$urls数组,应该怎么做?
arg = $arg;
}
public function run(){
if($this->arg){
// echo $this->result = $this->arg;
$this->result = model_http_curl_get($this->arg);
}
}
}
$thread = new DuoXianCheng("World");
if($thread->start()){
$thread->join();
}
function model_http_curl_get($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 5);
curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2)');
$result = curl_exec($curl);
curl_close($curl);
return $result;
}
for ($i = 0; $i $url) {
$workers[$key] = new \DuoXianCheng($url);
$workers[$key]->start();
}
foreach ($workers as $key=>$worker) {
while($workers[$key]->isRunning()) {
usleep(100);
}
if ($workers[$key]->join()) {
var_dump($workers[$key]->result);
}
}
$e = microtime(true);
echo "多线程耗时:".($e-$t)."秒
";
/* 单线程速度测试 */
$t = microtime(true);
foreach ($urls as $key=>$url) {
var_dump(model_http_curl_get($url));
}
$e = microtime(true);
echo "For循环耗时:".($e-$t)."秒
";
?>
回复内容:
以下代码运行没有问题,感觉$urls数组有多少数据,就生产多少进程,如果有几万个数据,是不是会有几万个进程?
如果要设置成只有10个进程来处理$urls数组,应该怎么做?
arg = $arg;
}
public function run(){
if($this->arg){
// echo $this->result = $this->arg;
$this->result = model_http_curl_get($this->arg);
}
}
}
$thread = new DuoXianCheng("World");
if($thread->start()){
$thread->join();
}
function model_http_curl_get($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 5);
curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2)');
$result = curl_exec($curl);
curl_close($curl);
return $result;
}
for ($i = 0; $i $url) {
$workers[$key] = new \DuoXianCheng($url);
$workers[$key]->start();
}
foreach ($workers as $key=>$worker) {
while($workers[$key]->isRunning()) {
usleep(100);
}
if ($workers[$key]->join()) {
var_dump($workers[$key]->result);
}
}
$e = microtime(true);
echo "多线程耗时:".($e-$t)."秒
";
/* 单线程速度测试 */
$t = microtime(true);
foreach ($urls as $key=>$url) {
var_dump(model_http_curl_get($url));
}
$e = microtime(true);
echo "For循环耗时:".($e-$t)."秒
";
?>
curl_init()不开新进程,但客户机的file descriptor是有限的,内存也是有限的,意味着能new的Thread不是无限的。你要达到pthread要达到的目的,不妨看看http://php.net/manual/en/function.curl-multi-init.php,它允许你异步的处理多个curl_init()返回。
Thread 类是线程,不是进程。
创建十个 DuoXianCheng 的对象:
for ($i = 0 ; $i $obj[$i] = new DuoXianCheng("World");
$obj[$i]->start();
}
感谢大家的回复!我指的是线程,不是进程,打字打错了!
如果$urls有十万条数据,然后只开十个线程,应该怎么操作?
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