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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 |
|---|---|
| 342 | * Filters a specific, non-default, site-updated message in the Network admin. |
| 343 | * |
| 344 | * The dynamic portion of the hook name, `$action`, refers to the non-default |
| 345 | * site update action. |
| 346 | * |
| 347 | * @since 3.1.0 |
| 348 | * |
| 349 | * @param string $msg The update message. Default 'Settings saved'. |
| 350 | */ |
| 351 | $msg = apply_filters( "network_sites_updated_message_{$action}", __( 'Settings saved.' ) ); |
| 352 | break; |
| 353 | } |
| 354 | |
| 355 | if ( ! empty( $msg ) ) { |
| 356 | $msg = '<div id="message" class="updated notice is-dismissible"><p>' . $msg . '</p></div>'; |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | $wp_list_table->prepare_items(); |