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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 |
|---|---|
| 3744 | else |
| 3745 | $value = $default; |
| 3746 | |
| 3747 | $value = maybe_unserialize( $value ); |
| 3748 | |
| 3749 | wp_cache_set( $cache_key, $value, 'site-options' ); |
| 3750 | } |
| 3751 | } |
| 3752 | |
| 3753 | return apply_filters( 'site_option_' . $option, $value ); |
| 3754 | } |
| 3755 | |
| 3756 | /** |
| 3757 | * Add a new site option. |
| 3758 | * |
| 3759 | * @see add_option() |
| 3760 | * @package WordPress |
| 3761 | * @subpackage Option |
| 3762 | * @since 2.8.0 |