Kernel Configuration (.settings.php)

Baseline: main 23.0+. Features newer than baseline are marked Since.

Primary config: /bitrix/.settings.php or /local/.settings.php (Since main 24.100). Overrides: /bitrix/.settings_extra.php or /local/.settings_extra.php (Since main 24.100).

Errors in .settings.php can break the site. Back up before changes.

Also maintain /local/php_interface/dbconn.php for legacy kernel compatibility even when using D7 only.

Structure

Each section: