如何使用PHP从我的网站提取/获取和显示数据（从其他电子商务网站）

Question

I have seen many of the eCommerce portals which are showing the list of products from another bigger eCommerce websites from across the world.

The fetching is not a big problem i think, by using file_get_contents or CURL in php, But the question is,

Do they provide some api to allow others to fetch their data/product info?

Do we need to get their permissions to fetch data from their sites.

Are there some elegant and specific method/way to fetch data to show on our site (instead of CURL & file_get_contents)?

Answer 1

Some websites provide their API to access data. Some cost money, Some may be free. In any case , yes, you need permission.

But you can always scrape their sites without permission.