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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 |
|---|---|
| 367 | WHERE link_id='$link_id'"); |
| 368 | } else { |
| 369 | $wpdb->query("INSERT INTO $wpdb->links (link_url, link_name, link_image, link_target, link_description, link_visible, link_owner, link_rating, link_rel, link_notes, link_rss) VALUES('$link_url','$link_name', '$link_image', '$link_target', '$link_description', '$link_visible', '$link_owner', '$link_rating', '$link_rel', '$link_notes', '$link_rss')"); |
| 370 | $link_id = (int) $wpdb->insert_id; |
| 371 | } |
| 372 | |
| 373 | wp_set_link_cats($link_id, $link_category); |
| 374 | |
| 375 | if ( $update ) |
| 376 | do_action('edit_link', $link_id); |
| 377 | else |
| 378 | do_action('add_link', $link_id); |
| 379 | |
| 380 | return $link_id; |
| 381 | } |
| 382 | |
| 383 | function wp_update_link($linkdata) { |
| 384 | global $wpdb; |
| 385 | |