wp-includes/class-wp-locale.php:130Constructor which calls helper methods to set up object variables.
public function __construct() { $this->init(); $this->register_globals(); }Introduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-locale.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.