Remove identical elements from the array

[Anon]

I parse file to remove identical lines. It took me quite a while so maybe somebody would need my little snippet 😉

$fr=fopen("./report.txt",'r');
$arr=file("./report.txt");

//Remove identical elements from the array

$n=count($arr);
for($i=1; $i<=$n; $i++){

for($j=$i; $j<=$n; $j++){
if($arr[$i-1]==$arr[$j]){$arr[$j]="";}
}
}

fclose($fr);

[Anon]

It will not work without it it!

if(trim($arr[$i-1])==trim($arr[$j])){ $arr[$j]="";}