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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 |
|---|---|
| 29 | * |
| 30 | * @since 2.2.0 |
| 31 | * |
| 32 | * @see convert_chars() |
| 33 | * @see get_bloginfo() |
| 34 | * |
| 35 | * @param string $info Converted string value of the blog information. |
| 36 | * @param string $show The type of blog information to retrieve. |
| 37 | */ |
| 38 | return apply_filters( 'get_bloginfo_rss', convert_chars( $info ), $show ); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Display RSS container for the bloginfo function. |
| 43 | * |
| 44 | * You can retrieve anything that you can using the get_bloginfo() function. |
| 45 | * Everything will be stripped of tags and characters converted, when the values |
| 46 | * are retrieved for use in the feeds. |
| 47 | * |
| Line | Code |
| 384 | } |
| 385 | |
| 386 | $cat_names = array_unique($cat_names); |
| 387 | |
| 388 | foreach ( $cat_names as $cat_name ) { |
| 389 | if ( 'rdf' == $type ) |
| 390 | $the_list .= "\t\t<dc:subject><![CDATA[$cat_name]]></dc:subject>\n"; |
| 391 | elseif ( 'atom' == $type ) |
| 392 | /** This filter is documented in wp-includes/feed.php */ |
| 393 | $the_list .= sprintf( '<category scheme="%1$s" term="%2$s" />', esc_attr( apply_filters( 'get_bloginfo_rss', get_bloginfo( 'url' ) ) ), esc_attr( $cat_name ) ); |
| 394 | else |
| 395 | $the_list .= "\t\t<category><![CDATA[" . @html_entity_decode( $cat_name, ENT_COMPAT, get_option('blog_charset') ) . "]]></category>\n"; |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Filter all of the post categories for display in a feed. |
| 400 | * |
| 401 | * @since 1.2.0 |
| 402 | * |