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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 |
|---|---|
| 60 | |
| 61 | foreach ( $options as $option_name ) { |
| 62 | if ( ! isset($_POST[$option_name]) ) |
| 63 | continue; |
| 64 | $value = stripslashes_deep( $_POST[$option_name] ); |
| 65 | update_site_option( $option_name, $value ); |
| 66 | } |
| 67 | |
| 68 | // Update more options here |
| 69 | do_action( 'update_wpmu_options' ); |
| 70 | |
| 71 | wp_redirect( add_query_arg( 'updated', 'true', network_admin_url( 'settings.php' ) ) ); |
| 72 | exit(); |
| 73 | } |
| 74 | |
| 75 | include( '../admin-header.php' ); |
| 76 | |
| 77 | if ( isset( $_GET['updated'] ) ) { |
| 78 | ?><div id="message" class="updated"><p><?php _e( 'Options saved.' ) ?></p></div><?php |