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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 |
|---|---|
| 2005 | $tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id ) ); |
| 2006 | |
| 2007 | if ( !empty($tt_id) ) |
| 2008 | return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); |
| 2009 | |
| 2010 | $wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent') + array( 'count' => 0 ) ); |
| 2011 | $tt_id = (int) $wpdb->insert_id; |
| 2012 | |
| 2013 | do_action("create_term", $term_id, $tt_id, $taxonomy); |
| 2014 | do_action("create_$taxonomy", $term_id, $tt_id); |
| 2015 | |
| 2016 | $term_id = apply_filters('term_id_filter', $term_id, $tt_id); |
| 2017 | |
| 2018 | clean_term_cache($term_id, $taxonomy); |
| 2019 | |
| 2020 | do_action("created_term", $term_id, $tt_id, $taxonomy); |
| 2021 | do_action("created_$taxonomy", $term_id, $tt_id); |
| 2022 | |
| 2023 | return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); |