PHP probem

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Reading From File</title>
</head>

<?php

    $DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];

    $filename = $DOCUMENT_ROOT.'learning php/css/'.'basic_2.txt';

    $line_in_file = count(file($filename));

    $fp = fopen($filename, 'r'); //this opens the file for reading

    for ($ii = 1; $ii <= $line_in_file; $ii++)
        {
            $line = fgets($fp); //reads one line from the file
            $city = trim($line);
        }
    fclose($fp);

?>
</html>