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wp-admin/install-helper.php › WordPress File

Plugins may load this file to gain access to special helper functions for plugin installation. This file is not included by WordPress and it is recommended, to prevent fatal errors, that this file is included using require_once.

Function Short description
check_columnChecks that database table column matches the criteria.
maybe_add_columnAdds column to database table, if it doesn't already exist.
maybe_create_tableCreates a table in the database if it doesn't already exist.
maybe_drop_columnDrops column from database table, if it exists.