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Source View: update_option

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

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
536      $notoptions = wp_cache_get( 'notoptions', 'options' );
537      if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
538           unset( $notoptions[$option] );
539           wp_cache_set( 'notoptions', $notoptions, 'options' );
540      }
541
542      $_newvalue = $newvalue;
543      $newvalue = maybe_serialize( $newvalue );
544
545      do_action( 'update_option', $option, $oldvalue, $_newvalue );
546      if ( ! defined( 'WP_INSTALLING' ) ) {
547           $alloptions = wp_load_alloptions();
548           if ( isset( $alloptions[$option] ) ) {
549                $alloptions[$option] = $_newvalue;
550                wp_cache_set( 'alloptions', $alloptions, 'options' );
551           } else {
552                wp_cache_set( $option, $_newvalue, 'options' );
553           }
554      }