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首页 / 网页编程 / PHP / 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
Host:" . $host . "

";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 $read, so we need tocompute from which socket(s) we"re reading. */ foreach ($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] = $data; } } } else {/* A time-out means that *all* streams have failedto receive a response. */ echo "Time-out!
"; break; }}print_r($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。