In One of the website am creating there is a requirement to use ssl. But i have no idea about this whatsoever. I know ssl is for secure sites. But what difference will be there in development and where do i get started? I saw this http://php.net/manual/en/book.openssl.php and this http://www.openssl.org/ so it possible to do this without buying an ssl with open ssl?

Ben u algılamak nasıl bu sanırım ....

if (isset($_SERVER['HTTPS']) )
{
    echo "SECURE: This page is being accessed through a secure connection.<br><br>";
}
else
{
    echo "UNSECURE: This page is being access through an unsecure connection.<br><br>";
}

Nerede başladı ve temelleri i bilmek gerekir almak için söyle lütfen.