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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 |
|---|---|
| 93 | } |
| 94 | foreach ( $options as $option_name ) { |
| 95 | if ( ! isset($_POST[$option_name]) ) |
| 96 | continue; |
| 97 | $value = stripslashes_deep( $_POST[$option_name] ); |
| 98 | update_site_option( $option_name, $value ); |
| 99 | } |
| 100 | |
| 101 | // Update more options here |
| 102 | do_action( 'update_wpmu_options' ); |
| 103 | |
| 104 | wp_redirect( add_query_arg( 'updated', 'true', network_admin_url( 'settings.php' ) ) ); |
| 105 | exit(); |
| 106 | } |
| 107 | |
| 108 | include( '../admin-header.php' ); |
| 109 | |
| 110 | if ( isset( $_GET['updated'] ) ) { |
| 111 | ?><div id="message" class="updated"><p><?php _e( 'Options saved.' ) ?></p></div><?php |