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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 37 | $catlink = str_replace('%category%', $category_nicename, $catlink); |
| 38 | $catlink = get_settings('home') . trailingslashit($catlink); |
| 39 | } |
| 40 | return apply_filters('category_link', $catlink, $category_id); |
| 41 | } |
| 42 | |
| 43 | function get_the_category_list($separator = '', $parents='') { |
| 44 | $categories = get_the_category(); |
| 45 | if (empty($categories)) |
| 46 | return apply_filters('the_category', __('Uncategorized'), $separator, $parents); |
| 47 | |
| 48 | $thelist = ''; |
| 49 | if ( '' == $separator ) { |
| 50 | $thelist .= '<ul class="post-categories">'; |
| 51 | foreach ( $categories as $category ) { |
| 52 | $category->cat_name = $category->cat_name; |
| 53 | $thelist .= "\n\t<li>"; |
| 54 | switch ( strtolower($parents) ) { |
| 55 | case 'multiple': |
| Line | Code |
| 88 | $thelist .= "$category->cat_name</a>"; |
| 89 | break; |
| 90 | case '': |
| 91 | default: |
| 92 | $thelist .= '<a href="' . get_category_link($category->cat_ID) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '" rel="category tag">'.$category->cat_name.'</a>'; |
| 93 | } |
| 94 | ++$i; |
| 95 | } |
| 96 | } |
| 97 | return apply_filters('the_category', $thelist, $separator, $parents); |
| 98 | } |
| 99 | |
| 100 | function the_category($separator = '', $parents='') { |
| 101 | echo get_the_category_list($separator, $parents); |
| 102 | } |
| 103 | |
| 104 | function get_the_category_by_ID($cat_ID) { |
| 105 | $cat_ID = (int) $cat_ID; |
| 106 | $category = &get_category($cat_ID); |