Retrieve the current user object.

Will set the current user, if the current user is not set. The current user will be set to the logged-in person. If no user is logged-in, then it will set the current user to 0, which is invalid and won’t have any permissions.

Signature

wp_get_current_user()

Return

(WP_User) Current WP_User instance.

Source

function wp_get_current_user() {
	return _wp_get_current_user();
}
WP Trac GitHub

Link here