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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 |
|---|---|
| 778 | $_category = $category; |
| 779 | } else { |
| 780 | $category = (int) $category; |
| 781 | if ( ! $_category = wp_cache_get($category, 'category') ) { |
| 782 | $_category = $wpdb->get_row("SELECT * FROM $wpdb->categories WHERE cat_ID = '$category' LIMIT 1"); |
| 783 | wp_cache_add($category, $_category, 'category'); |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | $_category = apply_filters('get_category', $_category); |
| 788 | |
| 789 | if ( !isset($_category->fullpath) ) { |
| 790 | $_category = set_category_path($_category); |
| 791 | wp_cache_replace($_category->cat_ID, $_category, 'category'); |
| 792 | } |
| 793 | |
| 794 | if ( $output == OBJECT ) { |
| 795 | return $_category; |
| 796 | } elseif ( $output == ARRAY_A ) { |