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apply_filters( 'add_signup_meta', array $meta )

Filters the new default site meta variables.

$meta

(array) An array of default site meta variables.

'lang_id'
(int) The language ID.
'blog_public'
(int) Whether search engines should be discouraged from indexing the site. 1 for true, 0 for false.

Used By	Description
wp-signup.php: validate_another_blog_signup()	Validate a new site signup for an existing user.
wp-signup.php: validate_user_signup()	Validate the new user signup
wp-signup.php: validate_blog_signup()	Validate new site signup

Version	Description
3.0.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/add_signup_meta