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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 |
|---|---|
| 961 | } else { // we're ignoring $page and using 'offset' |
| 962 | $q['offset'] = abs(intval($q['offset'])); |
| 963 | $pgstrt = $q['offset'] . ', '; |
| 964 | $limits = 'LIMIT ' . $pgstrt . $q['posts_per_page']; |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | // Apply post-paging filters on where and join. Only plugins that |
| 969 | // manipulate paging queries should use these hooks. |
| 970 | $where = apply_filters('posts_where_paged', $where); |
| 971 | $groupby = apply_filters('posts_groupby', $groupby); |
| 972 | if ( ! empty($groupby) ) |
| 973 | $groupby = 'GROUP BY ' . $groupby; |
| 974 | $join = apply_filters('posts_join_paged', $join); |
| 975 | $orderby = apply_filters('posts_orderby', $q['orderby']); |
| 976 | $distinct = apply_filters('posts_distinct', $distinct); |
| 977 | $fields = apply_filters('posts_fields', "$wpdb->posts.*"); |
| 978 | $limits = apply_filters( 'post_limits', $limits ); |
| 979 | $found_rows = ''; |