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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 |
|---|---|
| 36 | * use the wp-content/blog-deleted.php, blog-inactive.php and |
| 37 | * blog-suspended.php drop-ins. |
| 38 | * |
| 39 | * @return bool|string Returns true on success, or drop-in file to include. |
| 40 | */ |
| 41 | function ms_site_check() { |
| 42 | global $wpdb, $current_blog; |
| 43 | |
| 44 | // Allow short-circuiting |
| 45 | $check = apply_filters('ms_site_check', null); |
| 46 | if ( null !== $check ) |
| 47 | return true; |
| 48 | |
| 49 | // Allow super admins to see blocked sites |
| 50 | if ( is_super_admin() ) |
| 51 | return true; |
| 52 | |
| 53 | if ( '1' == $current_blog->deleted ) { |
| 54 | if ( file_exists( WP_CONTENT_DIR . '/blog-deleted.php' ) ) { |