What do all these lines specify in qa-app-users.php

Question

In qa-app-users.php:

 

define('QA_USER_LEVEL_BASIC', 0);

define('QA_USER_LEVEL_APPROVED', 10);

define('QA_USER_LEVEL_EXPERT', 20);

define('QA_USER_LEVEL_EDITOR', 50);

define('QA_USER_LEVEL_MODERATOR', 80);

define('QA_USER_LEVEL_ADMIN', 100);

define('QA_USER_LEVEL_SUPER', 120);

 

define('QA_USER_FLAGS_EMAIL_CONFIRMED', 1);

define('QA_USER_FLAGS_USER_BLOCKED', 2);

define('QA_USER_FLAGS_SHOW_AVATAR', 4);

define('QA_USER_FLAGS_SHOW_GRAVATAR', 8);

define('QA_USER_FLAGS_NO_MESSAGES', 16);

define('QA_USER_FLAGS_NO_MAILINGS', 32);

define('QA_USER_FLAGS_WELCOME_NOTICE', 64);

define('QA_USER_FLAGS_MUST_CONFIRM', 128);

define('QA_USER_FLAGS_NO_WALL_POSTS', 256);

define('QA_USER_FLAGS_MUST_APPROVE', 512);

 

define('QA_FIELD_FLAGS_MULTI_LINE', 1);

define('QA_FIELD_FLAGS_LINK_URL', 2);

define('QA_FIELD_FLAGS_ON_REGISTER', 4);

 

What do the numbers specify? For example what does show_avatar = 8 mean?

Answer 1

Those are just identifiers. In other words, QA_USER_LEVEL_BASIC = 0.

Check out my tutorial on flag and bitwise operators: http://www.question2answer.org/qa/16098/how-to-find-flag-qa_user_flags_user_blocked-from-user-flag?show=16102#a16102