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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 | foreach ( $cat_names as $cat_name ) { |
| 134 | if ( 'rdf' == $type ) |
| 135 | $the_list .= "\n\t\t<dc:subject><![CDATA[$cat_name]]></dc:subject>\n"; |
| 136 | elseif ( 'atom' == $type ) |
| 137 | $the_list .= sprintf( '<category scheme="%1$s" term="%2$s" />', attribute_escape( apply_filters( 'get_bloginfo_rss', get_bloginfo( 'url' ) ) ), attribute_escape( $cat_name ) ); |
| 138 | else |
| 139 | $the_list .= "\n\t\t<category><![CDATA[$cat_name]]></category>\n"; |
| 140 | } |
| 141 | |
| 142 | return apply_filters('the_category_rss', $the_list, $type); |
| 143 | } |
| 144 | |
| 145 | function the_category_rss($type = 'rss') { |
| 146 | echo get_the_category_rss($type); |
| 147 | } |
| 148 | |
| 149 | function html_type_rss() { |
| 150 | $type = get_bloginfo('html_type'); |
| 151 | if (strpos($type, 'xhtml') !== false) |