PHP search not working on csv file?

Question

PHP

There is a function that searches the csv file for matches

function find_value($filename, $value) {
    $f = fopen($filename, "r");
    $result = 'false';
    while ($row = fgetcsv($f, 0,";")) {
        if ($row[0] == $value) {
            $result[] = array($row[0], $row[1], $row[2], $row[3], $row[4], $row[5], $row[6]);
            break;
        }
    }
    fclose($f);
    return $result;
}

echo(find_value('libs/cities/city.csv', 'Ярославль'));

But it always returns false, although the word Yaroslavl is in this file, what is the error? (the path to the file is correct, I checked it through include)
The site is authorized via alert login and password, maybe because of this?