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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 |
|---|---|
| 125 | } |
| 126 | foreach ( $options as $option_name ) { |
| 127 | if ( ! isset($_POST[$option_name]) ) |
| 128 | continue; |
| 129 | $value = stripslashes_deep( $_POST[$option_name] ); |
| 130 | update_site_option( $option_name, $value ); |
| 131 | } |
| 132 | |
| 133 | // Update more options here |
| 134 | do_action( 'update_wpmu_options' ); |
| 135 | |
| 136 | wp_redirect( add_query_arg( 'updated', 'true', admin_url( 'ms-options.php' ) ) ); |
| 137 | exit(); |
| 138 | break; |
| 139 | case 'addblog': |
| 140 | check_admin_referer( 'add-blog', '_wpnonce_add-blog' ); |
| 141 | |
| 142 | if ( ! current_user_can( 'manage_sites' ) ) |
| 143 | wp_die( __( 'You do not have permission to access this page.' ) ); |