重庆分公司
重庆分公司，新征程启航
为企业提供网站建设、域名注册、服务器等服务
php中curl异步并发请求http的示例-创新互联
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！
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：'.$end_time;</pre><p><img src="/upload/otherpic41/2207.jpg" alt="php中curl异步并发请求http的示例"></p><p>最下面可以看到时间花了27秒。</p><p>接下来看下php curl 异步并发请求http的代码以及花费时间。</p><pre>$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($master);
return true;
}</pre><p><img src="/upload/otherpic41/2208.jpg" alt="php中curl异步并发请求http的示例"></p><p>才花了3秒？实际上我感觉应该是花了5秒，因为启动比同步要慢，开始的时候卡了2秒。</p><p>http请求效率，毋庸置疑是异步远远高于同步。</p><p>核心请求代码如下：（这是老外写的，有点小问题，最后的提示undefined offset）</p><pre>function rolling_curl($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>
网站题目：php中curl异步并发请求http的示例-创新互联 <br>
转载来源：<a href="http://cqcxhl.cn/article/dddeoc.html">http://cqcxhl.cn/article/dddeoc.html</a>
</div>
</div>
<div class="other">
<h3>其他资讯</h3>
<ul>
<li>
<a href="/article/dsihgoe.html">函数句柄c语言,c语言句柄的作用</a>
</li><li>
<a href="/article/dsihihp.html">flutter签到打卡,flutter 日历签到</a>
</li><li>
<a href="/article/dsihipo.html">android速成,安卓开发速成</a>
</li><li>
<a href="/article/dsihgoh.html">css覆盖浮动样式,css中浮动的定义</a>
</li><li>
<a href="/article/dsihgoj.html">php大数据文件导出,php大文件读取</a>
</li> </ul>
</div>
</div>
<div class="footer">
<div class="footer_content">
<div class="footer_content_top clear">
<div class="content_top_share fl">
<div><img src="/Public/Home/img/logo.png"></div>
<div class="top_share_content">
<dd>分享至：</dd>
<dt class="bdsharebuttonbox clear" id="share">
<a href="#" class="bds_tsina iconfont fl" data-cmd="tsina" title="分享到新浪微博"></a>
<a href="#" class="bds_sqq iconfont fl" data-cmd="sqq" title="分享到QQ好友"></a>
<a href="#" class="bds_weixin iconfont fl" data-cmd="weixin" title="分享到微信"></a>
<a href="#" class="bds_weixin iconfont fl" data-cmd="tieba" title="分享到贴吧"></a>
</dt>
<script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script>
</div>
</div>
<div class="content_top_left fl clear">
<div class="top_left_list fl">
<dd><a href="/about/">关于我们</a></dd>
<dt>
<a href="/about/#gsjj">公司简介</a>
<a href="/about/#fzlc">发展历程</a>
</dt>
</div>
<div class="top_left_list fl">
<dd><a href="/service/">服务项目</a></dd>
<dt>
<a href="/service/">高端网站建设</a>
<a href="/miniprogram/">小程序开发</a>
<a href="/service/app.html">APP开发</a>
<a href="/service/yingxiao.html">网络营销</a>
</dt>
</div>
<div class="top_left_list fl">
<dd><a href="/jianzhan/">建站知识</a></dd>
<dt>
<a href="/jianzhan/2.html">网站建设</a>
<a href="/jianzhan/3.html">网站设计</a>
<a href="/jianzhan/4.html">网站制作</a>
<a href="/jianzhan/5.html">小程序</a>
</dt>
</div>
<div class="top_left_list fl">
<dd><a href="/contact/">联系我们</a></dd>
<dt>
<a href="/contact/#lxwm">公司地址</a>
<a href="/contact/#rczp">人才招聘</a>
</dt>
</div>
</div>
<div class="content_top_right addressR fr">
<div class="top_right_title addressf_title">
<a href="javascript:;" class="on">成都</a>
<a href="javascript:;">重庆</a>
</div>
<div class="top_right_content addressf">
<div class="right_content_li on">
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">电话：028-86922220</dt>
</div>
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">地址：成都市太升南路288号锦天国际A幢1002号</dt>
</div>
</div>
<div class="right_content_li">
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">电话：028-86922220</dt>
</div>
<div class="right_content_list clear">
<dd class="fl iconfont"></dd>
<dt class="fl">地址：重庆市南岸区弹子石腾龙大道58号2栋21-6</dt>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="footer_content_copyright clear">版权所有：成都创新互联科技有限公司重庆分公司
<a href="http://beian.miit.gov.cn/" rel="nofollow" target="_blank">渝ICP备2021005571号-4</a>
</div>
</div>
<!--浮窗-->
<div class="FloatingWindow clear">
<a href="tencent://message/?uin=1683211881&Site=&Menu=yes" class="FloatingWindow_list fr">
<div class="FloatingWindow_list_title">
<dd class="iconfont"></dd>
<dt><span>在线</span>咨询</dt>
</div>
</a>
<a href="javascript:;" class="FloatingWindow_list fr">
<div class="FloatingWindow_list_title">
<dd class="iconfont"></dd>
<dt>服务热线</dt>
</div>
<div class="FloatingWindow_list_down fadeInRight animated">服务热线：028-86922220</div>
</a>
<a href="javascript:;" class="FloatingWindow_list fr STop">
<div class="FloatingWindow_list_title">
<dd class="iconfont"></dd>
<dt>TOP</dt>
</div>
</a>
</div>
<script src="/Public/Home/js/jquery-1.8.3.min.js"></script>
<script src="/Public/Home/js/comm.js"></script>
<script src="/Public/Home/js/wow.js"></script>
<script src="/Public/Home/js/common.js"></script>
</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);
}
});
</script>