Remove duplicate data in a text file with php

Question

I am in need to open a text file (file.txt) which contains data in the following format

ai
bt
bt
gh
ai
gh
lo
ki
ki
lo

ultimately I want to remo

Answer 1

Take the php function file() to read the file. You get an array of lines from your file. After that, take array_unique to kick out the duplicates.

In the end, you will have something like

$lines = array_unique(file("your_file.txt"));