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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 |
|---|---|
| 69 | $blog = get_blog_details( $blog_id ); |
| 70 | /** |
| 71 | * Fires before a blog is deleted. |
| 72 | * |
| 73 | * @since MU |
| 74 | * |
| 75 | * @param int $blog_id The blog ID. |
| 76 | * @param bool $drop True if blog's table should be dropped. Default is false. |
| 77 | */ |
| 78 | do_action( 'delete_blog', $blog_id, $drop ); |
| 79 | |
| 80 | $users = get_users( array( 'blog_id' => $blog_id, 'fields' => 'ids' ) ); |
| 81 | |
| 82 | // Remove users from this blog. |
| 83 | if ( ! empty( $users ) ) { |
| 84 | foreach ( $users as $user_id ) { |
| 85 | remove_user_from_blog( $user_id, $blog_id ); |
| 86 | } |
| 87 | } |