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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 |
|---|---|
| 267 | * Filters a specific, non-default site-updated message in the Network admin. |
| 268 | * |
| 269 | * The dynamic portion of the hook name, `$_GET['updated']`, refers to the |
| 270 | * non-default site update action. |
| 271 | * |
| 272 | * @since 3.1.0 |
| 273 | * |
| 274 | * @param string $msg The update message. Default 'Settings saved'. |
| 275 | */ |
| 276 | $msg = apply_filters( 'network_sites_updated_message_' . $_GET['updated'], __( 'Settings saved.' ) ); |
| 277 | break; |
| 278 | } |
| 279 | |
| 280 | if ( ! empty( $msg ) ) |
| 281 | $msg = '<div id="message" class="updated notice is-dismissible"><p>' . $msg . '</p></div>'; |
| 282 | } |
| 283 | |
| 284 | $wp_list_table->prepare_items(); |
| 285 | |