How to solve the problem that curl transfers data too slowly in php

How to solve the problem that curl transfers data too slowly in PHP?

If you use thecurl_setoptfunction to process the remote webservice or crawl the page, sometimes you will encounter a very strange phenomenon. The first access speed is abnormally slow. Basically it takes 5s-10s for people to collapse.

But no matter how much I check, I can’t figure out where the problem lies. I recently found an article about how to deal with this problem.

Start by solving the problem:

1、curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); //强制协议为1.0 2、curl_setopt($ch, CURLOPT_HTTPHEADER, array(''Expect: '')); //头部要送出'Expect: ' 3、curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 ); //强制使用IPV4协议解析域名

Related references:php tutorial

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