Why is PHP processing a CSV file into 19 smaller CSV’s so slow?
I have created this php script which takes a very long time to filter the CSV file into 19 smaller ones. The link for the CSV's is within this google drive line https://drive.google.com/drive/folders/1Bju4kkVgo21xu3IFeyKWNJ1uClTn534J?usp=share_link I have the process running line by…