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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 |
|---|---|
| 130 | $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')"); |
| 131 | $link_id = (int) $wpdb->insert_id; |
| 132 | } |
| 133 | |
| 134 | wp_set_link_cats($link_id, $link_category); |
| 135 | |
| 136 | if ( $update ) |
| 137 | do_action('edit_link', $link_id); |
| 138 | else |
| 139 | do_action('add_link', $link_id); |
| 140 | |
| 141 | return $link_id; |
| 142 | } |
| 143 | |
| 144 | function wp_set_link_cats($link_id = 0, $link_categories = array()) { |
| 145 | // If $link_categories isn't already an array, make it one: |
| 146 | if (!is_array($link_categories) || 0 == count($link_categories)) |
| 147 | $link_categories = array(get_option('default_link_category')); |
| 148 | |