When curl collects web page data, preg_match_all() in the for loop can only obtain the first two pieces of data.
get() can get the data. When you get to preg_match_all, you can only get the first two items. The rest will show that there is no record yet. If you modify $i Starting from the third item, only the first two are obtained, so the third item has data, but preg_match_all cannot be obtained in the loop
