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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 937 | $result = $wpdb->update( $wpdb->sitemeta, array( 'meta_value' => $serialized_value ), array( 'site_id' => $wpdb->siteid, 'meta_key' => $option ) ); |
| 938 | |
| 939 | if ( $result ) { |
| 940 | $cache_key = "{$wpdb->siteid}:$option"; |
| 941 | wp_cache_set( $cache_key, $value, 'site-options' ); |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | if ( $result ) { |
| 946 | do_action( "update_site_option_{$option}", $option, $value, $old_value ); |
| 947 | do_action( "update_site_option", $option, $value, $old_value ); |
| 948 | return true; |
| 949 | } |
| 950 | return false; |
| 951 | } |
| 952 | |
| 953 | /** |
| 954 | * Delete a site transient. |
| 955 | * |