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Source View: pre_site_option_{$option}

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
3718  * @param string $option Name of option to retrieve. Expected to not be SQL-escaped.
3719  * @param mixed $default Optional value to return if option doesn't exist. Default false.
3720  * @param bool $use_cache Whether to use cache. Multisite only. Default true.
3721  * @return mixed Value set for the option.
3722  */
3723 function get_site_option( $option, $default = false, $use_cache = true ) {
3724      global $wpdb;
3725
3726      // Allow plugins to short-circuit site options.
3727       $pre = apply_filters( 'pre_site_option_' . $option, false );
3728       if ( false !== $pre )
3729            return $pre;
3730
3731      if ( !is_multisite() ) {
3732           $value = get_option($option, $default);
3733      } else {
3734           $cache_key = "{$wpdb->siteid}:$option";
3735           if ( $use_cache )
3736                $value = wp_cache_get($cache_key, 'site-options');