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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 |
|---|---|
| 3538 | else |
| 3539 | $value = $default; |
| 3540 | |
| 3541 | $value = maybe_unserialize( $value ); |
| 3542 | |
| 3543 | wp_cache_set( $cache_key, $value, 'site-options' ); |
| 3544 | } |
| 3545 | } |
| 3546 | |
| 3547 | return apply_filters( 'site_option_' . $option, $value ); |
| 3548 | } |
| 3549 | |
| 3550 | /** |
| 3551 | * Add a new site option. |
| 3552 | * |
| 3553 | * @see add_option() |
| 3554 | * @package WordPress |
| 3555 | * @subpackage Option |
| 3556 | * @since 2.8.0 |