Convert file to data stream

Question

Hello heroes, I want to convert the excel file into a data stream and then send it to the interface. .NET uses this class to implement FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);

What method is used to implement PHP? grateful.

Answer 1

https://www.php.cn/php-ask-477855.html This?

Answer 2

You mentioned uploading the excel file?

Answer 3

https://www.php.cn/toutiao-364080.html Try this article