class functions:
  //Class constructor - specify destination of login-password file 
  //if file not exists - it will be created automatically
  //if file not specified - generates error message
  function BAccess($pfile)

  //Returns an user rights - [a or u]=[admin or user], if it not in list - returns FALSE
  function check_access($login,$pass)


  //Returns FALSE if user was added, Error message if not
  function add_user($login,$pass,$rights)

  //Returns FALSE if user was deleted. Error message if not
  function remove_user($login)

No MySql needed. Class Saves a log of warnings in warn.log , and log of errors in err.log.
If any questions - you are welcome - hide@address.com