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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1717 | * |
| 1718 | * Return false to disable sending the email. |
| 1719 | * |
| 1720 | * @since 5.6.0 |
| 1721 | * |
| 1722 | * @param bool $send Whether to send the email. |
| 1723 | * @param WP_Site $site Site object of the new site. |
| 1724 | * @param WP_User $user User object of the administrator of the new site. |
| 1725 | */ |
| 1726 | if ( ! apply_filters( 'send_new_site_email', true, $site, $user ) ) { |
| 1727 | return false; |
| 1728 | } |
| 1729 | |
| 1730 | $switched_locale = false; |
| 1731 | $network_admin = get_user_by( 'email', $email ); |
| 1732 | |
| 1733 | if ( $network_admin ) { |
| 1734 | // If the network admin email address corresponds to a user, switch to their locale. |
| 1735 | $switched_locale = switch_to_locale( get_user_locale( $network_admin ) ); |