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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 |
|---|---|
| 77 | |
| 78 | update_blog_status( $blog_id, 'deleted', 1 ); |
| 79 | |
| 80 | // Don't destroy the initial, main, or root blog. |
| 81 | if ( $drop && ( 1 == $blog_id || is_main_site( $blog_id ) || ( $blog->path == $current_site->path && $blog->domain == $current_site->domain ) ) ) |
| 82 | $drop = false; |
| 83 | |
| 84 | if ( $drop ) { |
| 85 | |
| 86 | $drop_tables = apply_filters( 'wpmu_drop_tables', $wpdb->tables( 'blog' ) ); |
| 87 | |
| 88 | foreach ( (array) $drop_tables as $table ) { |
| 89 | $wpdb->query( "DROP TABLE IF EXISTS `$table`" ); |
| 90 | } |
| 91 | |
| 92 | $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->blogs WHERE blog_id = %d", $blog_id ) ); |
| 93 | $dir = apply_filters( 'wpmu_delete_blog_upload_dir', WP_CONTENT_DIR . "/blogs.dir/{$blog_id}/files/", $blog_id ); |
| 94 | $dir = rtrim( $dir, DIRECTORY_SEPARATOR ); |
| 95 | $top_dir = $dir; |