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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 |
|---|---|
| 405 | * At the time of this action, the only recourse is to redirect somewhere |
| 406 | * and exit. If you want to declare a particular site, do so earlier. |
| 407 | * |
| 408 | * @since 3.9.0 |
| 409 | * |
| 410 | * @param WP_Network $current_site The network that had been determined. |
| 411 | * @param string $domain The domain used to search for a site. |
| 412 | * @param string $path The path used to search for a site. |
| 413 | */ |
| 414 | do_action( 'ms_site_not_found', $current_site, $domain, $path ); |
| 415 | |
| 416 | if ( $subdomain && ! defined( 'NOBLOGREDIRECT' ) ) { |
| 417 | // For a "subdomain" installation, redirect to the signup form specifically. |
| 418 | $destination .= 'wp-signup.php?new=' . str_replace( '.' . $current_site->domain, '', $domain ); |
| 419 | } elseif ( $subdomain ) { |
| 420 | /* |
| 421 | * For a "subdomain" installation, the NOBLOGREDIRECT constant |
| 422 | * can be used to avoid a redirect to the signup form. |
| 423 | * Using the ms_site_not_found action is preferred to the constant. |