- backdrop_bootstrap in core/
- Ensures Backdrop is bootstrapped to the specified phase.
- drupal.inc in core/
- Contains constants and function wrappers for Drupal 7.x compatibility.
- http.php in core/
modules/ simpletest/ tests/ http.php
- Fake an HTTP request, for use during testing.
- https.php in core/
modules/ simpletest/ tests/ https.php
- Fake an HTTPS request, for use during testing.
- install_begin_request in core/
- Begins an installation request, modifying the installation state as needed.
- update_prepare_bootstrap in core/
- Performs extra steps required to bootstrap when using a Drupal 7 database.