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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 |
|---|---|
| 153 | } |
| 154 | foreach ( $options as $option_name ) { |
| 155 | if ( ! isset($_POST[$option_name]) ) |
| 156 | continue; |
| 157 | $value = stripslashes_deep( $_POST[$option_name] ); |
| 158 | update_site_option( $option_name, $value ); |
| 159 | } |
| 160 | |
| 161 | // Update more options here |
| 162 | do_action( 'update_wpmu_options' ); |
| 163 | |
| 164 | wp_redirect( add_query_arg( 'updated', 'true', network_admin_url( 'settings.php' ) ) ); |
| 165 | exit(); |
| 166 | break; |
| 167 | |
| 168 | case 'updateblog': |
| 169 | // No longer used. |
| 170 | break; |
| 171 | |