Root Files
index.php
Purpose Entry point for front-end requests. It only defines WP_USE_THEMES and hands off execution to wp-blog-header.php. Flow Defines WP_USE_THEMES as...
Updated March 13, 2026
Root Files
Entry point files in the WordPress root directory. Source: WordPress installation root Bootstrap File Description index.php.md Front controller entry point...
Updated March 13, 2026
wp-activate.php
Purpose Multisite activation endpoint. Validates signup activation keys and completes user/site activation. Flow Defines WP_INSTALLING and loads WordPress + front-end...
Updated March 13, 2026
wp-blog-header.php
Purpose Loads the WordPress environment and runs the front-end request lifecycle (query + template). Flow Ensures it only runs once...
Updated March 13, 2026