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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 |
|---|---|
| 3580 | wp_cache_set( $cache_key, $value, 'site-options' ); |
| 3581 | |
| 3582 | $_value = $value; |
| 3583 | $value = maybe_serialize($value); |
| 3584 | $result = $wpdb->insert( $wpdb->sitemeta, array('site_id' => $wpdb->siteid, 'meta_key' => $option, 'meta_value' => $value ) ); |
| 3585 | $value = $_value; |
| 3586 | } |
| 3587 | |
| 3588 | do_action( "add_site_option_{$option}", $option, $value ); |
| 3589 | do_action( "add_site_option", $option, $value ); |
| 3590 | |
| 3591 | return $result; |
| 3592 | } |
| 3593 | |
| 3594 | /** |
| 3595 | * Removes site option by name. |
| 3596 | * |
| 3597 | * @see delete_option() |
| 3598 | * @package WordPress |