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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 |
|---|---|
| 607 | * @param int $user_id |
| 608 | */ |
| 609 | function grant_super_admin( $user_id ) { |
| 610 | global $super_admins; |
| 611 | |
| 612 | // If global super_admins override is defined, there is nothing to do here. |
| 613 | if ( isset($super_admins) ) |
| 614 | return false; |
| 615 | |
| 616 | do_action( 'grant_super_admin', $user_id ); |
| 617 | |
| 618 | // Directly fetch site_admins instead of using get_super_admins() |
| 619 | $super_admins = get_site_option( 'site_admins', array( 'admin' ) ); |
| 620 | |
| 621 | $user = get_userdata( $user_id ); |
| 622 | if ( $user && ! in_array( $user->user_login, $super_admins ) ) { |
| 623 | $super_admins[] = $user->user_login; |
| 624 | update_site_option( 'site_admins' , $super_admins ); |
| 625 | do_action( 'granted_super_admin', $user_id ); |