Php three methods to achieve multithreading are similar, php three multithreading are similar _ PHP Tutorial

Php three methods for implementing multithreading are similar, and php three multithreading are similar. Php three methods to achieve multithreading are similar, php three multithreading are similar 1. curl_multi method when multithreading is required, you can use curl_multi to request multiple operations at a time, however, c php has three methods similar to multithreading, and php has three similar multithreading methods.

1. curl_multi method

When multithreading is required, you can use curl_multi to request multiple operations at a time. However, curl uses network communication, and 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 Framework format foreach ($ data as $ k => $ v) {if ($ k % 2 = 0) {// send an even url $ send_data [$ k] ['URL'] = ''; $ send_data [$ k] ['body'] = $ v ['waybill _ id'];} else {// send another url with an odd number $ 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_POSTFIE LDS, 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. stream_socket_client

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 " . $id . " closes at " . date('h:i:s') . ".
  ";             fclose($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 multithreading with multiple processes

Function daemon ($ func_name, $ args, $ number) {while (true) {$ pid = pcntl_fork (); if ($ pid =-1) {echo "fork process fail"; exit () ;}elseif ($ pid) {// The created sub-process static $ num = 0; $ num ++; if ($ num >=$ number) {// when the number of processes reaches a certain number, the child processes are recycled. Pcntl_wait ($ status); $ num -- ;}} else {// if it is 0, it indicates that it was created by a sub-process and directly enters the working state 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 );

The above are three methods similar to implementing multithreading in php, which I hope will help you learn.

When multithreading is required for the curl_multi method, you can use curl_multi to request multiple operations at a time, but c...