Text file into dropdown – Specific lines

if ($handle)
{
while (($line = fgets($handle)) !== false)
{

if (strlen($line)==21)
{
$line = str_replace('\'', '', $line);
$line = str_replace(',', '', $line);
echo "" .$line."";
$i++;
}
else
{
// echo "error";
}

} // end while
echo "";
}//end if handle