Переход на новую строку при записи в файл.

<? 
@ $fin = fopen("menu.txt", "r") or die("File Menu not found!");
$fout = fopen("links.php", "w");
fwrite($fout, '<?php $go = "home"; $page = "home.html"; ');
fwrite($fout, 'if (isset($_GET[\'go\'])) '); 
fwrite($fout, '{$go = $_GET[\'go\']; switch($go){ ');
while (!feof($fin)) {
   $line = fgets($fin);
        $data = explode(";", $line);
        $link = $data[3]; 
        $nm = $data[2];
fwrite($fout, 'case "'.$link.'": $page = "'.$nm.'"; break; ');
}
fwrite($fout, '} } ?>');
fclose($fin);
fclose($fout);
?>

fwrite($fout, "<?php \$go = \"home\"; \$page = \"home.html\";\r\n");
fwrite($fout, "if (isset(\$_GET['go']))\r\n"); 
fwrite($fout, "{\$go = \$_GET['go'];\r\nswitch(\$go){\r\n");

$s=<<<END
<?php \$go = "home"; \$page = "home.html";
if (isset(\$_GET['go']))
{\$go = \$_GET['go'];
switch(\$go){
END;
fwrite($fout,$s);

<?php
$conn = $_SERVER['HTTP_USER_AGENT']. ' : '.$_SERVER['REMOTE_ADDR']." \n";
$path = "connects.txt";
$file = fopen($path, "a");
if(file_exists($path)) {
    fwrite($file, $conn);
    fclose($file);
    echo "Данные записаны";
} else {
    echo "Файла не существует";
}
?>

<?php
echo "<br>";
?>