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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 |
|---|---|
| 326 | link_rating='$link_rating', link_rel='$link_rel', |
| 327 | link_notes='$link_notes', link_rss = '$link_rss' |
| 328 | WHERE link_id='$link_id'"); |
| 329 | } else { |
| 330 | $wpdb->query("INSERT INTO $wpdb->links (link_url, link_name, link_image, link_target, link_category, link_description, link_visible, link_owner, link_rating, link_rel, link_notes, link_rss) VALUES('$link_url','$link_name', '$link_image', '$link_target', '$link_category', '$link_description', '$link_visible', '$link_owner', '$link_rating', '$link_rel', '$link_notes', '$link_rss')"); |
| 331 | $link_id = (int) $wpdb->insert_id; |
| 332 | } |
| 333 | |
| 334 | if ( $update ) |
| 335 | do_action('edit_link', $link_id); |
| 336 | else |
| 337 | do_action('add_link', $link_id); |
| 338 | |
| 339 | return $link_id; |
| 340 | } |
| 341 | |
| 342 | function wp_update_link($linkdata) { |
| 343 | global $wpdb; |
| 344 | |