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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 |
|---|---|
| 910 | |
| 911 | if ( !$archive_date_format_over_ride ) { |
| 912 | $archive_day_date_format = get_option('date_format'); |
| 913 | $archive_week_start_date_format = get_option('date_format'); |
| 914 | $archive_week_end_date_format = get_option('date_format'); |
| 915 | } |
| 916 | |
| 917 | //filters |
| 918 | $where = apply_filters('getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r ); |
| 919 | $join = apply_filters('getarchives_join', "", $r); |
| 920 | |
| 921 | $output = ''; |
| 922 | |
| 923 | if ( 'monthly' == $type ) { |
| 924 | $query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date DESC $limit"; |
| 925 | $key = md5($query); |
| 926 | $cache = wp_cache_get( 'wp_get_archives' , 'general'); |
| 927 | if ( !isset( $cache[ $key ] ) ) { |
| 928 | $arcresults = $wpdb->get_results($query); |