CURL page capture failure solution

CURL failed to crawl the page. CURL failed to crawl the page but I crawled the website www.baidu.com. I think it's because the original website interpreted the road, or what ...... (I guess, I don't know why.) do you want to forge a head as you often say. Or what CURL fails to capture the page?
Failed to crawl the page with CURL

However, I can successfully crawl the website www.baidu.com.

I think it's because the original website interpreted the road, or what ...... (I guess I don't know why)

Is it necessary to forge a head as you often say. Or something ............


You can give me some examples.


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Discussion

What do you return?

How can I get this ???

Reference:

First, let's see what the other party has returned to you...
If no conditions are known, you cannot determine the method of the other party.

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Not completely consistent ..
So you don't need to test the baidu. what is the url you want to access?