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Source View: pre_update_site_option_{$option}

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Line Code
1172       *
1173       * The dynamic portion of the hook name, $option, refers to the option name.
1174       *
1175       * @since 2.9.0 As 'pre_update_site_option_' . $key
1176       * @since 3.0.0
1177       *
1178       * @param mixed $value     New value of site option.
1179       * @param mixed $old_value Old value of site option.
1180       */
1181      $value = apply_filters( 'pre_update_site_option_' . $option, $value, $old_value );
1182
1183      if ( $value === $old_value )
1184           return false;
1185
1186      if ( false === $old_value )
1187           return add_site_option( $option, $value );
1188
1189      $notoptions_key = "{$wpdb->siteid}:notoptions";
1190      $notoptions = wp_cache_get( $notoptions_key, 'site-options' );