php三种实现多线程类似的方法

1、curl_multi方法

当需要多线程的时候，可以用curl_multi一次性请求多个操作来完成，但curl走的是网络通信，效率与可靠性就比较差了的。

function main(){     $sql = "select waybill_id,order_id from waybill where status>40 order by update_time desc limit 10 ";      $data = Yii::app()->db->createCommand($sql)->queryAll(); //yii 框架格式      foreach ($data as $k => $v) {         if ($k % 2 == 0) { //偶数发一个网址          $send_data[$k]['url'] = '';          $send_data[$k]['body'] = $v['waybill_id'];        } else { //奇数发送另外一个网址         $send_data[$k]['url'] = 'http://www.abc.com';          $send_data[$k]['body']=array($v['order_id'] => array('extra' => 16));        }      }     $back_data =sendMulitRequest($send_data);      var_dump($back_data);    }   function sendMulitRequest($send_data){     $params = array();     $curl = $text = array();     $handle = curl_multi_init();      foreach ($data as $k => $v) {        if (empty($v['url'])) {          $v['url'] = "http://www.xxx.com"; //if url is empty,set defalut url        }        $reqBody = json_encode($v['body']);        $reqStream = array(          'body' => $reqBody,       );        $encRequest = base64_encode(json_encode($reqStream));        $params['data'] = $encRequest;       $curl[$k] = curl_init();       curl_setopt($curl[$k], CURLOPT_URL, $v['url']);       curl_setopt($curl[$k], CURLOPT_POST, TRUE);       curl_setopt($curl[$k], CURLOPT_HEADER, 0);       curl_setopt($curl[$k], CURLOPT_POSTFIELDS, http_build_query($params));       curl_setopt($curl[$k], CURLOPT_RETURNTRANSFER, 1);       curl_multi_add_handle($handle, $curl[$k]);     }     $active = null;      do {        $mrc = curl_multi_exec($handle, $active);      } while ($mrc == CURLM_CALL_MULTI_PERFORM);     while ($active && $mrc == CURLM_OK) {        if (curl_multi_select($handle) != -1) {          do {            $mrc = curl_multi_exec($handle, $active);          } while ($mrc == CURLM_CALL_MULTI_PERFORM);        }      }     foreach ($curl as $k => $v) {        if (curl_error($curl[$k]) == "") {         $text[$k] = (string) curl_multi_getcontent($curl[$k]);        }        curl_multi_remove_handle($handle, $curl[$k]);        curl_close($curl[$k]);     }     curl_multi_close($handle);      return $text;    } 

2、通过stream_socket_client 方式

function sendStream() {     $english_format_number = number_format($number, 4, '.', '');      echo $english_format_number;      exit();     $timeout = 10;     $result = array();     $sockets = array();     $convenient_read_block = 8192;     $host = "test.local.com";     $sql = "select waybill_id,order_id from xm_waybill where status>40 order by update_time desc limit 1 ";      $data = Yii::app()->db->createCommand($sql)->queryAll();     $id = 0;      foreach ($data as $k => $v) {       if ($k % 2 == 0) {         $send_data[$k]['body'] = NoticeOrder::getSendData($v['waybill_id']);        } else {         $send_data[$k]['body'] = array($v['order_id'] => array('extra' => 16));        }        $data = json_encode($send_data[$k]['body']);       $s = stream_socket_client($host . ":80", $errno, $errstr, $timeout, STREAM_CLIENT_ASYNC_CONNECT | STREAM_CLIENT_CONNECT);       if ($s) {          $sockets[$id++] = $s;         $http_message = "GET /php/test.php?data=" . $data . " HTTP/1.0/r/nHost:" . $host . "/r/n/r/n";          fwrite($s, $http_message);       } else {          echo "Stream " . $id . " failed to open correctly.";       }      }      while (count($sockets)) {        $read = $sockets;        stream_select($read, $w = null, $e = null, $timeout);        if (count($read)) {          /* stream_select generally shuffles $read, so we need to          compute from which socket(s) we're reading. */         foreach ($read as $r) {            $id = array_search($r, $sockets);           $data = fread($r, $convenient_read_block);           if (strlen($data) == 0) {             echo "Stream " . $id . " closes at " . date('h:i:s') . ".<br>  ";             fclose($r);              unset($sockets[$id]);           } else {             $result[$id] = $data;           }         }       } else {          /* A time-out means that *all* streams have failed          to receive a response. */         echo "Time-out!/n";         break;       }      }      print_r($result);    }