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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 |
|---|---|
| 909 | } |
| 910 | |
| 911 | /** |
| 912 | * Fires before the user is granted Super Admin privileges. |
| 913 | * |
| 914 | * @since 3.0.0 |
| 915 | * |
| 916 | * @param int $user_id ID of the user that is about to be granted Super Admin privileges. |
| 917 | */ |
| 918 | do_action( 'grant_super_admin', $user_id ); |
| 919 | |
| 920 | // Directly fetch site_admins instead of using get_super_admins(). |
| 921 | $super_admins = get_site_option( 'site_admins', array( 'admin' ) ); |
| 922 | |
| 923 | $user = get_userdata( $user_id ); |
| 924 | if ( $user && ! in_array( $user->user_login, $super_admins ) ) { |
| 925 | $super_admins[] = $user->user_login; |
| 926 | update_site_option( 'site_admins', $super_admins ); |
| 927 | |