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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 |
|---|---|
| 132 | function wpmu_delete_user( $id ) { |
| 133 | global $wpdb; |
| 134 | |
| 135 | $id = (int) $id; |
| 136 | $user = new WP_User( $id ); |
| 137 | |
| 138 | if ( !$user->exists() ) |
| 139 | return false; |
| 140 | |
| 141 | do_action( 'wpmu_delete_user', $id ); |
| 142 | |
| 143 | $blogs = get_blogs_of_user( $id ); |
| 144 | |
| 145 | if ( ! empty( $blogs ) ) { |
| 146 | foreach ( $blogs as $blog ) { |
| 147 | switch_to_blog( $blog->userblog_id ); |
| 148 | remove_user_from_blog( $id, $blog->userblog_id ); |
| 149 | |
| 150 | $post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $id ) ); |