php中curl异步并发请求http的示例
小编给大家分享一下php中curl异步并发请求http的示例,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
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先来看下同步的代码以及请求时间。
$start_time=date("h:i:sa"); for ($i=0; $i <100 ; $i++) { $urls[]="http://www.downxia.com/downinfo/2315".$i.".html"; GetTitle(geturl("http://www.downxia.com/downinfo/2315".$i.".html")); } function geturl($url){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $output = curl_exec($ch); curl_close($ch); return $output; } function GetTitle($output){ preg_match('/.*<\/title>/i',$output,$matches); var_dump($matches[0]); } $end_time=date("h:i:sa"); echo '开始时间是:'.$start_time; echo '结束时间是:'.$end_time;</pre><p><img src="/upload/otherpic69/2207.jpg" alt="php中curl异步并发请求http的示例"></p><p>最下面可以看到时间花了27秒。</p><p>接下来看下php curl 异步并发请求http的代码以及花费时间。</p><pre>$start_time=date("h:i:sa"); $urls=[]; for ($i=0; $i <100 ; $i++) { $urls[]="http://www.downxia.com/downinfo/2315".$i.".html"; } var_dump($urls); // GetTitle('klasjdkla<title>313asds12 '); rolling_curl($urls,'GetTitle'); function GetTitle($output){ preg_match('/.*<\/title>/i',$output,$matches); var_dump($matches[0]); } $end_time=date("h:i:sa"); echo '开始时间是:'.$start_time; echo '结束时间是:'.$end_time; function rolling_curl($urls, $callback, $custom_options = null) {//多个url访问 // make sure the rolling window isn't greater than the # of urls $rolling_window = 5; $rolling_window = (sizeof($urls) < $rolling_window) ? sizeof($urls) : $rolling_window; $master = curl_multi_init(); $curl_arr = array(); // add additional curl options here $std_options = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_FOLLOWLOCATION => true, CURLOPT_MAXREDIRS => 5 ); $options = ($custom_options) ? ($std_options + $custom_options) : $std_options; // start the first batch of requests for ($i = 0; $i < $rolling_window; $i++) { $ch = curl_init(); $options[CURLOPT_URL] = $urls[$i]; curl_setopt_array($ch, $options); curl_multi_add_handle($master, $ch); } do { while (($execrun = curl_multi_exec($master, $running)) == CURLM_CALL_MULTI_PERFORM); if ($execrun != CURLM_OK) { break; } // a request was just completed -- find out which one while ($done = curl_multi_info_read($master)) { $info = curl_getinfo($done['handle']); if ($info['http_code'] == 200) { $output = curl_multi_getcontent($done['handle']); // request successful. process output using the callback function. $callback($output); // start a new request (it's important to do this before removing the old one) $ch = curl_init(); $options[CURLOPT_URL] = $urls[$i++]; // increment i curl_setopt_array($ch, $options); curl_multi_add_handle($master, $ch); // remove the curl handle that just completed curl_multi_remove_handle($master, $done['handle']); } else { // request failed. add error handling. } } } while ($running); curl_multi_close($master); return true; }</pre><p><img src="/upload/otherpic69/2208.jpg" alt="php中curl异步并发请求http的示例"></p><p>才花了3秒?实际上我感觉应该是花了5秒,因为启动比同步要慢,开始的时候卡了2秒。</p><p>http请求效率,毋庸置疑是异步远远高于同步。</p><p>核心请求代码如下:(这是老外写的,有点小问题,最后的提示undefined offset)</p><pre>function rolling_curl($urls, $callback, $custom_options = null) {//多个url访问 // make sure the rolling window isn't greater than the # of urls $rolling_window = 5; $rolling_window = (sizeof($urls) < $rolling_window) ? sizeof($urls) : $rolling_window; $master = curl_multi_init(); $curl_arr = array(); // add additional curl options here $std_options = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_FOLLOWLOCATION => true, CURLOPT_MAXREDIRS => 5 ); $options = ($custom_options) ? ($std_options + $custom_options) : $std_options; // start the first batch of requests for ($i = 0; $i < $rolling_window; $i++) { $ch = curl_init(); $options[CURLOPT_URL] = $urls[$i]; curl_setopt_array($ch, $options); curl_multi_add_handle($master, $ch); } do { while (($execrun = curl_multi_exec($master, $running)) == CURLM_CALL_MULTI_PERFORM); if ($execrun != CURLM_OK) { break; } // a request was just completed -- find out which one while ($done = curl_multi_info_read($master)) { $info = curl_getinfo($done['handle']); if ($info['http_code'] == 200) { $output = curl_multi_getcontent($done['handle']); // request successful. process output using the callback function. $callback($output); // start a new request (it's important to do this before removing the old one) $ch = curl_init(); $options[CURLOPT_URL] = $urls[$i++]; // increment i curl_setopt_array($ch, $options); curl_multi_add_handle($master, $ch); // remove the curl handle that just completed curl_multi_remove_handle($master, $done['handle']); } else { // request failed. add error handling. } } } while ($running); curl_multi_close($master); return true; }</pre><p>修改一下。只要在新增url的时候加个判断就好了。// 当$i等于$urls数组大小时不用再增加了。</p><pre>function rolling_curl($urls, $callback, $custom_options = null) {//多个url访问 // make sure the rolling window isn't greater than the # of urls $rolling_window = 5; $rolling_window = (sizeof($urls) < $rolling_window) ? sizeof($urls) : $rolling_window; $master = curl_multi_init(); $curl_arr = array(); // add additional curl options here $std_options = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_FOLLOWLOCATION => true, CURLOPT_MAXREDIRS => 5 ); $options = ($custom_options) ? ($std_options + $custom_options) : $std_options; // start the first batch of requests for ($i = 0; $i < $rolling_window; $i++) { $ch = curl_init(); $options[CURLOPT_URL] = $urls[$i]; curl_setopt_array($ch, $options); curl_multi_add_handle($master, $ch); } do { while (($execrun = curl_multi_exec($master, $running)) == CURLM_CALL_MULTI_PERFORM); if ($execrun != CURLM_OK) { break; } // a request was just completed -- find out which one while ($done = curl_multi_info_read($master)) { $info = curl_getinfo($done['handle']); if ($info['http_code'] == 200) { $output = curl_multi_getcontent($done['handle']); // request successful. process output using the callback function. $callback($output); // start a new request (it's important to do this before removing the old one) // 当$i等于$urls数组大小时不用再增加了 if($i<sizeof($urls)){ $ch = curl_init(); $options[CURLOPT_URL] = $urls[$i++]; // increment i curl_setopt_array($ch, $options); curl_multi_add_handle($master, $ch); } // remove the curl handle that just completed curl_multi_remove_handle($master, $done['handle']); } else { // request failed. add error handling. } } } while ($running); curl_multi_close($master); return true; }</pre><p>以上是“php中curl异步并发请求http的示例”这篇文章的所有内容,感谢各位的阅读!相信大家都有了一定的了解,希望分享的内容对大家有所帮助,如果还想学习更多知识,欢迎关注创新互联行业资讯频道!</p> <br> 分享文章:php中curl异步并发请求http的示例 <br> 网页路径:<a href="http://scjiangan.com/article/pdedjo.html">http://scjiangan.com/article/pdedjo.html</a> </div> </div> <div class="contentr fr"> <h3>其他资讯</h3> <ul> <li> <a href="/article/ddddjic.html">c语言_max函数头文件 c语言max函数的使用方法</a> </li><li> <a href="/article/ddddjio.html">wordpress佣金 wordpress怎么盈利</a> </li><li> <a href="/article/ddddjso.html">帝国cms忘记账号密码 帝国cms默认密码</a> </li><li> <a href="/article/ddddjcj.html">阿里云服务器如何查找 查看阿里云服务器用户名和密码</a> </li><li> <a href="/article/ddddjes.html">服务器安全终端是什么东西 服务器安全设备</a> </li> </ul> </div> </div> </div> <!--底部--> <footer> <div class="foot"> <div class="container"> <h1>江安建站您身边的网站建设服务商</h1> <div class="foot1"> <ul> <li> <dl><i class="iconfont"></i><b>地址ADDRESS</b></dl> <p>四川-江安青羊区太升南路288号<br> 锦天国际A座10楼 </p> </li> <li> <dl><i class="iconfont"></i><b>电话/TEL</b></dl> <p><a href="tel:02886922220" target="_blank">028 86922220</a> (工作日)<br> <a href="tel:18980820575" target="_blank">1898082 0575</a> ( 7x24 ) </p> </li> <li> <dl><i class="iconfont"></i><b>QQ咨询</b></dl> <p> 244261566 (售前)<br> 631063699 (售后) </p> </li> <li> <dl><i class="iconfont"></i><b>邮箱/E: mail</b></dl> <p> service@cdcxhl.com (业务)<br> hr@cdcxhl.com (求职) </p> </li> </ul> </div> <div class="link"> 友情链接: <a href="http://www.jyfdjwx.com/" title="jyfdjwx.com" target="_blank">jyfdjwx.com</a> <a href="http://www.cdxwcx.cn/tuoguan/zigong.html" title="自贡托管服务器" target="_blank">自贡托管服务器</a> <a href="https://www.cdcxhl.com/quanwang.html" title="全网营销推广" target="_blank">全网营销推广</a> <a href="http://www.cxhljz.cn/app/" title="手机APP开发" target="_blank">手机APP开发</a> <a href="http://www.schdas.cn/" title="四川鸿达" target="_blank">四川鸿达</a> <a href="http://www.cdxwcx.cn/tuoguan/bgp.html" title="bgp多线机房托管" target="_blank">bgp多线机房托管</a> <a href="http://www.pzfdjzy.com/" title="攀枝花网站建设" target="_blank">攀枝花网站建设</a> <a href="http://www.scpengxi.com/" title="蓬溪网站建设" target="_blank">蓬溪网站建设</a> <a href="http://www.cdxwcx.cn/tuoguan/xibuxinxi.html" title="成都西信机房托管" target="_blank">成都西信机房托管</a> <a href="http://www.cxhlcq.com/seo/" title="重庆网络营销" target="_blank">重庆网络营销</a> </div> </div> </div> <div class="copy container"> Copyright © 2024 All Rights Reserved. 四川江安网站建设公司 版权所有 <a href="https://beian.miit.gov.cn/" target="_blank" rel="nofollow">蜀ICP备2024080923号-4</a> [原创设计,独立版权。未经许可.不得拷贝或镜像]<br> <a href="http://www.kswsj.cn/" target="_blank">网站营销推广</a> | <a href="https://www.cdcxhl.com/pinpai.html" target="_blank">品牌网站设计</a> | <a href="http://www.cdweb.net/" target="_blank">自适应网站建设</a> | <a href="http://cdkjz.cn/wangzhan/pinpai/" target="_blank">品牌网站建设</a> | <a href="http://chengdu.cdxwcx.cn/" target="_blank">成都网站制作</a> | <a href="https://www.cdcxhl.com/cloud/" target="_blank">云服务器</a> | <a href="https://www.cdcxhl.com/weihu/jiangan.html" target="_blank">江安网站维护</a> | (江安网站建设QQ : 631063699 )</div> </footer> <!--在线咨询--> <div class="fot"> <ul> <li> <a href="mqqwpa://im/chat?chat_type=wpa&uin=532337155&version=1&src_type=web&web_src=oicqzone.com" target="_blank"> <img src="/Public/Home/img/fot1.png" alt="建站咨询"> <p>在线咨询</p> </a> </li> <li> <a href="tel:18980820575" target="_blank"> <img src="/Public/Home/img/fot2.png" alt="建站电话"> <p>拨打电话</p> </a> </li> </ul> </div> </body> </html> <script> $(".con img").each(function(){ var src = $(this).attr("src"); //获取图片地址 var str=new RegExp("http"); var result=str.test(src); if(result==false){ var url = "https://www.cdcxhl.com"+src; //绝对路径 $(this).attr("src",url); } }); window.onload=function(){ document.oncontextmenu=function(){ return false; } } </script>