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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 |
|---|---|
| 3665 | else |
| 3666 | $value = $default; |
| 3667 | |
| 3668 | $value = maybe_unserialize( $value ); |
| 3669 | |
| 3670 | wp_cache_set( $cache_key, $value, 'site-options' ); |
| 3671 | } |
| 3672 | } |
| 3673 | |
| 3674 | return apply_filters( 'site_option_' . $option, $value ); |
| 3675 | } |
| 3676 | |
| 3677 | /** |
| 3678 | * Add a new site option. |
| 3679 | * |
| 3680 | * @see add_option() |
| 3681 | * @package WordPress |
| 3682 | * @subpackage Option |
| 3683 | * @since 2.8.0 |