wp-includes/functions.php:101Retrieves the current time as an object using the site's timezone.
DateTimeImmutablefunction current_datetime() { return new DateTimeImmutable( 'now', wp_timezone() );}Introduced in 5.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.