Looking for SECURE login script

I'm currently making a website for Team639 and i'm looking for a secure login script. The script can be in any language, but PHP is preferred(since I understand it). The script must have the following criteria:

• server/user "talk" (especially with usernames and passwords) must be encrypted.
• database driven
• admin panel
• users can modify their data (Name, phone #, etc)

Thanks!