Load .txt, remove duplication and save into .txt

[t_k_eoh]

Hi guys,

Appreciate if you can lend me a hand on the following:

 

I have a file (output.txt) which has lots of words in it (words are saved in "\n"), I would like to sort the words and then save it into another file (data.txt). How do I do it?

 

I know how to open the output.txt file and read it but i don't know how to call it out into an array, remove duplicated words and sort it. Can you pls help??

 

Thanks a lot!

 

 

[trq]

<?php

  $lines = file('output.txt');
  $lines = array_unique(sort($lines));
  $f = fopen('data.txt','w');
  foreach($lines as $line) {
    fwrite($f,$line."\n");
  }
  fclose($f);

?>