Просмотр поста

echo '<a href="' . htmlentities(trim($_GET['url']), ENT_QUOTES, 'UTF-8') . '">' . htmlentities(trim($_GET['url']), ENT_QUOTES, 'UTF-8') . '</a>';

$url = htmlentities(trim($_GET['url']), ENT_QUOTES, 'UTF-8');
echo '<a href="' . $url . '">' . $url . '</a>';