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); }

3、通过多进程代替多线程

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);

以上就是为大家分享的三种php实现多线程类似的方法，希望对大家的学习有所帮助。

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