<?php $f = file("key.txt"); $a = array(); for($i=0; $i<sizeof($f); $i++) { $t = trim($f[$i]); $a[$t] = $t; } foreach($a as $k) { echo $k."\n"; } ?>
<?php$data = file("data.txt");file_put_contents('unique.txt', implode('', array_unique($data)));?>