Filter a csv file by a word or text using php

Question

I have another csv file where I am trying to do a simple word filter. For example, my text.csv file looks something like this:

name, age, hobbies
Tom, 8, \"         


        

Answer 1

What about case insensitive searches. I'm curious to make this work amonst a list of my outlook contacts. Is there a better function to use than strtolower()??