Summary of methods for implementing multi-threading in PHP_PHP tutorial

Everyone knows that PHP does not support multi-threading. But it is really a headache for people who need similar multi-threading capabilities. Fortunately, there are several solutions to solve this problem, similar to multi-threading functions. The following are three solutions that I have summarized to implement similar methods of multi-threading. The following are three solutions and code examples.

1. curl_multi method

When multi-threading is required, curl_multi can be used to request multiple operations at once, but curl uses network communication, so the efficiency and reliability are relatively poor.

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; 
 
  
 
   } 

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. Through stream_socket_client method

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(&#39;h:i:s&#39;) . ".<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); 
 
    } 

function sendStream() {

 

 

 

        $english_format_number = number_format($number, 4, &#39;.&#39;, &#39;&#39;);

        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][&#39;body&#39;] = NoticeOrder::getSendData($v[&#39;waybill_id&#39;]);

            } else {

 

                $send_data[$k][&#39;body&#39;] = array($v[&#39;order_id&#39;] => array(&#39;extra&#39; => 16));

            }

            $data = json_encode($send_data[$k][&#39;body&#39;]);

 

            $s = stream_socket_client($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&#39;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(&#39;h:i:s&#39;) . ".<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);

    }

3. Replace multi-threading with multi-processes

function daemon($func_name,$args,$number){ 
    while(true){ 
        $pid=pcntl_fork(); 
        if($pid==-1){ 
            echo "fork process fail"; 
            exit(); 
        }elseif($pid){//创建的子进程  
 
            static $num=0; 
            $num++; 
            if($num>=$number){ 
                //当进程数量达到一定数量时候，就对子进程进行回收。  
                pcntl_wait($status); 
 
                $num--; 
            } 
 
        }else{ //为0 则代表是子进程创建的，则直接进入工作状态  
 
            if(function_exists($func_name)){ 
                while (true) { 
                    $ppid=posix_getpid(); 
                    var_dump($ppid); 
                    call_user_func_array($func_name,$args); 
                    sleep(2); 
                } 
            }else{ 
                echo "function is not exists"; 
            } 
            exit(); 
 
 
        } 
    } 
} 
 
function worker($args){ 
 
    //do something  
 
} 
 
daemon('worker',array(1),2); 

function daemon($func_name,$args,$number){
 while(true){
  $pid=pcntl_fork();
  if($pid==-1){
   echo "fork process fail";
   exit();
  }elseif($pid){//创建的子进程

   static $num=0;
   $num++;
   if($num>=$number){
    //当进程数量达到一定数量时候，就对子进程进行回收。
    pcntl_wait($status);

    $num--;
   }

  }else{ //为0 则代表是子进程创建的，则直接进入工作状态

   if(function_exists($func_name)){
    while (true) {
     $ppid=posix_getpid();
     var_dump($ppid);
     call_user_func_array($func_name,$args);
     sleep(2);
    }
   }else{
    echo "function is not exists";
   }
   exit();


  }
 }
}

function worker($args){

 //do something

}

daemon('worker',array(1),2);
 
 

http://www.bkjia.com/PHPjc/477201.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/477201.htmlTechArticleEveryone knows that PHP does not support multi-threading. But it is really a headache for people who need similar multi-threading capabilities. Fortunately, there are several solutions to solve it, such as multi-threading...