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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 |
|---|---|
| 814 | wp_cache_set( $cache_key, $value, 'site-options' ); |
| 815 | |
| 816 | $_value = $value; |
| 817 | $value = maybe_serialize( $value ); |
| 818 | $result = $wpdb->insert( $wpdb->sitemeta, array('site_id' => $wpdb->siteid, 'meta_key' => $option, 'meta_value' => $value ) ); |
| 819 | $value = $_value; |
| 820 | } |
| 821 | |
| 822 | if ( $result ) { |
| 823 | do_action( "add_site_option_{$option}", $option, $value ); |
| 824 | do_action( "add_site_option", $option, $value ); |
| 825 | return true; |
| 826 | } |
| 827 | return false; |
| 828 | } |
| 829 | |
| 830 | /** |
| 831 | * Removes site option by name. |
| 832 | * |