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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 |
|---|---|
| 66 | * use the wp-content/blog-deleted.php, blog-inactive.php and |
| 67 | * blog-suspended.php drop-ins. |
| 68 | * |
| 69 | * @return bool|string Returns true on success, or drop-in file to include. |
| 70 | */ |
| 71 | function ms_site_check() { |
| 72 | global $wpdb, $current_blog; |
| 73 | |
| 74 | // Allow short-circuiting |
| 75 | $check = apply_filters('ms_site_check', null); |
| 76 | if ( null !== $check ) |
| 77 | return true; |
| 78 | |
| 79 | // Allow super admins to see blocked sites |
| 80 | if ( is_super_admin() ) |
| 81 | return true; |
| 82 | |
| 83 | if ( '1' == $current_blog->deleted ) { |
| 84 | if ( file_exists( WP_CONTENT_DIR . '/blog-deleted.php' ) ) |