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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 |
|---|---|
| 229 | } |
| 230 | |
| 231 | // FINALLY, delete user |
| 232 | $wpdb->query("DELETE FROM $wpdb->users WHERE ID = $id"); |
| 233 | $wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = '$id'"); |
| 234 | |
| 235 | wp_cache_delete($id, 'users'); |
| 236 | wp_cache_delete($user->user_login, 'userlogins'); |
| 237 | |
| 238 | do_action('delete_user', $id); |
| 239 | |
| 240 | return true; |
| 241 | } |
| 242 | |
| 243 | function get_link($link_id, $output = OBJECT) { |
| 244 | global $wpdb; |
| 245 | |
| 246 | $link = $wpdb->get_row("SELECT * FROM $wpdb->links WHERE link_id = '$link_id'"); |
| 247 | |