// Let's make sure the length of the input URL is bigger than zero
if (strlen($url) == 0) {
return false;
}
// Let's hope the user is not shortening URLs with wrong protocols
if (!($helper->starts_with($url, "http://") || $helper->starts_with($url, "https://") || $helper->starts_with($url, "ftp://"))) {
return false;
}
// Also, let's make sure that the end result will be shorter than the
// original URL - otherwise, what's the point in shortening it!
if (strlen($url) < strlen($host) + 1 + $max_length) {
return false;
}
// Finally, make sure that the URL is not already shortened by another
// URL shortener
$exclusions = $config->getExcludedUrlShorteners();
if (in_array($url, $exclusions)) {
return false;
}
return true;
};
$redirect = function ($shortened) use($app, $helper) {
$row = $helper->find_by_shortened($shortened);
if (isset($row)) {
$id = $row["id"];
$count = $row["count"];
$helper->update_count($id, $count + 1);
$original = $row["original"];
$app->redirect($original);
} else {
$app->redirect('/');
