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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 |
---|---|
133 | $the_list = ''; |
134 | foreach ($categories as $category) { |
135 | $category->cat_name = convert_chars($category->cat_name); |
136 | if ('rdf' == $type) { |
137 | $the_list .= "\n\t<dc:subject>$category->cat_name</dc:subject>"; |
138 | } else { |
139 | $the_list .= "\n\t<category>$category->cat_name</category>"; |
140 | } |
141 | } |
142 | echo apply_filters('the_category_rss', $the_list, $type); |
143 | } |
144 |
|
145 | function rss_enclosure() { |
146 | global $id, $post; |
147 | if (!empty($post->post_password) && ($_COOKIE['wp-postpass_'.COOKIEHASH] != $post->post_password)) return; |
148 |
|
149 | $custom_fields = get_post_custom(); |
150 | if( is_array( $custom_fields ) ) { |
151 | while( list( $key, $val ) = each( $custom_fields ) ) { |