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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 |
|---|---|
| 58 | $switch = false; |
| 59 | if ( $blog_id != $wpdb->blogid ) { |
| 60 | $switch = true; |
| 61 | switch_to_blog( $blog_id ); |
| 62 | $blog = get_blog_details( $blog_id ); |
| 63 | } else { |
| 64 | $blog = $GLOBALS['current_blog']; |
| 65 | } |
| 66 | |
| 67 | do_action( 'delete_blog', $blog_id, $drop ); |
| 68 | |
| 69 | $users = get_users( array( 'blog_id' => $blog_id, 'fields' => 'ids' ) ); |
| 70 | |
| 71 | // Remove users from this blog. |
| 72 | if ( ! empty( $users ) ) { |
| 73 | foreach ( $users as $user_id ) { |
| 74 | remove_user_from_blog( $user_id, $blog_id ); |
| 75 | } |
| 76 | } |