pthreads - 求助，php使用Pthread進行多進程的問題？

以下代碼運行沒有問題，感覺$urls數組有多少資料，就生產多少進程，如果有幾萬個資料，是不是會有幾萬個進程？

如果要設定成只有10個進程來處理$urls數組，應該怎麼做？

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 < 10; $i++) {        $urls[] = 'http://www.baidu.com/s?wd='. rand(10000, 20000);    }/* 多線程速度測試 */    $t = microtime(true);    foreach ($urls as $key=>$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);        }    }    $e = microtime(true);    echo "多線程耗時：".($e-$t)."秒
";                /* 單線程速度測試 */    $t = microtime(true);    foreach ($urls as $key=>$url) {        var_dump(model_http_curl_get($url));    }    $e = microtime(true);    echo "For迴圈耗時：".($e-$t)."秒
";  ?>

回複內容：

以下代碼運行沒有問題，感覺$urls數組有多少資料，就生產多少進程，如果有幾萬個資料，是不是會有幾萬個進程？

如果要設定成只有10個進程來處理$urls數組，應該怎麼做？

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 < 10; $i++) {        $urls[] = 'http://www.baidu.com/s?wd='. rand(10000, 20000);    }/* 多線程速度測試 */    $t = microtime(true);    foreach ($urls as $key=>$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);        }    }    $e = microtime(true);    echo "多線程耗時：".($e-$t)."秒
";                /* 單線程速度測試 */    $t = microtime(true);    foreach ($urls as $key=>$url) {        var_dump(model_http_curl_get($url));    }    $e = microtime(true);    echo "For迴圈耗時：".($e-$t)."秒
";  ?>

curl_init()不開新進程，但客戶機的file descriptor是有限的，記憶體也是有限的，意味著能new的Thread不是無限的。你要達到pthread要達到的目的，不妨看看http://php.net/manual/en/function.curl-multi-init.php，它允許你非同步處理多個curl_init()返回。

Thread 類是線程，不是進程。
建立十個 DuoXianCheng 的對象：
for ($i = 0 ; $i <=9 ; $i++) {
$obj[$i] = new DuoXianCheng("World");
$obj[$i]->start();
}

感謝大家的回複！我指的是線程，不是進程，打字打錯了！
如果$urls有十萬條資料，然後只開十個線程，應該怎麼操作？

