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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 |
|---|---|
| 99 | if ($category->category_parent) $thelist .= get_category_parents($category->category_parent, FALSE); |
| 100 | $thelist .= "$category->cat_name</a>"; |
| 101 | case '': |
| 102 | default: |
| 103 | $thelist .= '<a href="' . get_category_link(0, $category->category_id, $category->category_nicename) . '" title="' . sprintf(__("View all posts in %s"), $category->cat_name) . '">'.$category->cat_name.'</a>'; |
| 104 | } |
| 105 | ++$i; |
| 106 | } |
| 107 | } |
| 108 | echo apply_filters('the_category', $thelist); |
| 109 | } |
| 110 | |
| 111 | function the_category_rss($type = 'rss') { |
| 112 | $categories = get_the_category(); |
| 113 | $the_list = ''; |
| 114 | foreach ($categories as $category) { |
| 115 | $category->cat_name = stripslashes(convert_chars($category->cat_name)); |
| 116 | if ('rdf' == $type) { |
| 117 | $the_list .= "\n\t<dc:subject>$category->cat_name</dc:subject>"; |