WP hooks navigation: Home/browse • Actions index • Filters index
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 |
|---|---|
| 1692 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1693 | * |
| 1694 | * @since 3.0.0 |
| 1695 | * @since 4.4.0 The `$option` parameter was added. |
| 1696 | * @since 4.7.0 The `$network_id` parameter was added. |
| 1697 | * |
| 1698 | * @param string $option Option name. |
| 1699 | * @param int $network_id ID of the network. |
| 1700 | */ |
| 1701 | do_action( "pre_delete_site_option_{$option}", $option, $network_id ); |
| 1702 | |
| 1703 | if ( ! is_multisite() ) { |
| 1704 | $result = delete_option( $option ); |
| 1705 | } else { |
| 1706 | $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $network_id ) ); |
| 1707 | if ( is_null( $row ) || ! $row->meta_id ) { |
| 1708 | return false; |
| 1709 | } |
| 1710 | $cache_key = "$network_id:$option"; |