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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 |
|---|---|
| 1811 | $results = $wpdb->get_results( $query ); |
| 1812 | wp_cache_set( $key, $results, 'posts' ); |
| 1813 | } |
| 1814 | if ( $results ) { |
| 1815 | foreach ( (array) $results as $result ) { |
| 1816 | if ( $result->post_date != '0000-00-00 00:00:00' ) { |
| 1817 | $url = get_permalink( $result ); |
| 1818 | if ( $result->post_title ) { |
| 1819 | /** This filter is documented in wp-includes/post-template.php */ |
| 1820 | $text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) ); |
| 1821 | } else { |
| 1822 | $text = $result->ID; |
| 1823 | } |
| 1824 | $output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] ); |
| 1825 | } |
| 1826 | } |
| 1827 | } |
| 1828 | } |
| 1829 | if ( $r['echo'] ) { |