使用php合并多个csv文件和一个文件名列

Combine multiple CSV into one single CSV column wise

I have many csv files with column 1 with the same information but column 2 is different.

For ex. CSV1 has the following information

a 1 b 2 c 3

And CSV2 has the following

a 1.5 b 2.3 c 3.6

I tried to CAT the files and I end up getting a file concatenated by Rows. But I am looking for something like the following output in a new csv. It would b helpful if able to get php script for this .

Result.csv should be

a 1 1.5 b 2 2.3 c 3 3.6