I want to ask you if you can give me an advice in how to make a secure login and register application in php and mysql.
If you can give me a link or an idea I would be very thankful.
Hi human2600, welcome to DW. You can use Google to search for this - there are thousands of good scripts out there. If you're a n00b, then choose a simple one, one that has just procedural code as opposed to object-orientated stuff. The procedural examples are much easier to understand and modify if you're new to it.
You can use SESSION variable to secure login.
here for new idea register and login for strictly system at front
please check link http://srisatya.com/index.php/madauth.
and the back is very simple using session and don't forget mysql_real_escape_string to avoid SQL injection