Update some columns content in some csv files with a batch.
eg: 1.csv 2.csv 3.csv 4.csv.....
All the columns name are the same in all the csv file.
Suppposed those csv
files have columns test1 test2 test3 test4 test5......
. the test1 have contents like this:
0
0
0
0
..
now, i want to change them to 99
, namely:
99
99
99
99
..
Is there a tool or using php to update the content in all the csv files synchronously and update the content with a batch. thank you