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