Context level of Moodle

From lib/accesslib.php

25 // context definitions
26 define('CONTEXT_SYSTEM', 10);
27 define('CONTEXT_PERSONAL', 20);
28 define('CONTEXT_USER', 30);
29 define('CONTEXT_COURSECAT', 40);
30 define('CONTEXT_COURSE', 50);
31 define('CONTEXT_GROUP', 60);
32 define('CONTEXT_MODULE', 70);
33 define('CONTEXT_BLOCK', 80);

php_mysql.dll problem in Apache

Apache startup error message:

PHP Startup: Unable to Load Dynamic library 'C:\PHP\ext\php_mysql.dll - The specified module could not be found.

Solution:

Copy the libmysql.dll from the main php folder to \windows\system32