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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 |
|---|---|
| 1114 | // ms_protect_special_option( $option ); @todo |
| 1115 | |
| 1116 | /** |
| 1117 | * Fires immediately before a specific site option is deleted. |
| 1118 | * |
| 1119 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1120 | * |
| 1121 | * @since 3.0.0 |
| 1122 | */ |
| 1123 | do_action( 'pre_delete_site_option_' . $option ); |
| 1124 | |
| 1125 | if ( !is_multisite() ) { |
| 1126 | $result = delete_option( $option ); |
| 1127 | } else { |
| 1128 | $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); |
| 1129 | if ( is_null( $row ) || !$row->meta_id ) |
| 1130 | return false; |
| 1131 | $cache_key = "{$wpdb->siteid}:$option"; |
| 1132 | wp_cache_delete( $cache_key, 'site-options' ); |