DbPackages-sqlite.php - This file contains functions specifically designed to be utilized by packages. This file is used for SQLite databases.

dbpackages_init', 'Loads the numerous functions in this file into $smcFunc if they aren\'t already there.
smf_db_add_column', 'Adds a column to a table.
smf_db_add_index', 'Adds an index to the specified table.
smf_db_alter_table', 'Emulates the "ALTER TABLE" functionality for SQLite 2.x, which doesn\'t include this.
smf_db_calculate_type', 'Determines the correct column type and size based on the given parameters.
smf_db_change_column', 'Changes a column.
smf_db_create_table', 'Creates a table with the specified column(s), index(es), etc.
smf_db_drop_table', 'Drops the specified table.
smf_db_list_columns', 'Returns information about all the columns in a table.
smf_db_list_indexes', 'Returns information about the indexes in a table.
smf_db_remove_column', 'Drops the specified column from the specified table.
smf_db_remove_index', 'Removes the specified index.
smf_db_table_structure', 'Gets and returns information about the structure of the specified table.

DbSearch-mysql.php - Contains functions for handling various search-related functions.


db_search_init', 'Adds the functions from the "DbSearch" file to the $smcFunc array if they aren\'t already there. Specifically, it adds db_search_query, db_search_support, db_create_word_search. Also adds db_support_ignore, which is a variable indicating whether or not the.
smf_db_create_word_search', 'Creates the custom word index table.
smf_db_search_support', 'Tells SMF whether or not a particular search method is supported by the current db type.

DbSearch-postgresql.php - Contains functions needed for handling search-related functionality in PostgreSQL.

db_search_init', 'Adds the functions from the "DbSearch" file to the $smcFunc array if they aren\'t already there. Specifically, it adds db_search_query, db_search_support, db_create_word_search. Also adds db_support_ignore, which is a variable indicating whether or not the.
smf_db_create_word_search', 'Creates the custom word index table.
smf_db_search_query', 'Returns the appropriate query for the particular database type.
smf_db_search_support', 'Tells SMF whether or not a particular search method is supported by the current db type.

DbSearch-sqlite.php - Contains functions for handling search-related functionality in SQLite

db_search_init', 'Adds the functions from the "DbSearch" file to the $smcFunc array if they aren\'t already there. Specifically, it adds db_search_query, db_search_support, db_create_word_search. Also adds db_support_ignore, which is a variable indicating whether or not the.
smf_db_create_word_search', 'Creates the custom word index table.
smf_db_insert_sql', 'Returns the appropriate "INSERT" statement(s) to insert the current data for this table.
smf_db_search_query', 'Returns the appropriate query for the particular database type.
smf_db_search_support', 'Tells SMF whether or not a particular search method is supported by the current db type.

Display.php - This is perhaps the most important and probably most accessed files in all of SMF. This file controls topic, message, and attachment display.

approved_attach_sort', 'A function for sorting out attachments and putting unapproved attachments before approved ones in an array.
Display', 'This function loads the posts in a topic up so they can be displayed.
Download', 'This function downloads an attachment or avatar, and increments the downloads.
loadAttachmentContext', 'This function loads an attachment\'s contextual data including, most importantly, its size if it is an image.
prepareDisplayContext', 'This function actually gets and prepares the message context.
QuickInTopicModeration', 'This handles the in-topic quick moderation stuff.

DumpDatabase.php - This file handles database backups.

DumpDatabase2', 'This function writes all of the database to standard output.

Errors.php - This important file contains functions for handling and logging errors.

db_fatal_error', 'Loads Subs-Auth.php and calls show_db_error().
error_handler', 'A standard replacement for PHP\'s error handler.
fatal_error', 'Stops execution and displays an error message.
fatal_lang_error', 'Stops execution and displays an error message according to the specified key.
log_error', 'Logs an error, if error logging is enabled.
setup_fatal_error_context', 'Sets up the $context stuff for a fatal error.

Groups.php - This file currently just shows group info, and allows certain privileged members to add/remove members.

GroupList', 'Lists all the groups.
GroupRequests', 'Show and manage all group requests.
Groups', 'Allows moderators and users to access the group-showing functions.
list_getGroupCount', 'Returns the total number of groups that you can see.
list_getGroupRequestCount', 'Finds out how many members have requested to join a particular group or specific groups.
list_getGroupRequests', 'Loads up the list of requests for the current group.
list_getGroups', 'Gets the group information for the list.
MembergroupMembers', 'Show a list of members that are part of a given membergroup.

Help.php - This file handles the nifty little admin help popup boxes and the user help pages.

ShowAdminHelp', 'This function sets up the little admin help popup boxes.
ShowHelp', 'Handles the user help pages.

Karma.php - This file handles smiting and applauding.

ModifyKarma', 'This function smites or applauds as needed...