wp-includes/deprecated.php:3735Whether SSL login should be forced.
$forcestring|booloptionalnullboolfunction force_ssl_login( $force = null ) { _deprecated_function( __FUNCTION__, '4.4.0', 'force_ssl_admin()' ); return force_ssl_admin( $force );}Introduced in 2.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/deprecated.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.