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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 |
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5 | * @package WordPress |
6 | */ |
7 |
|
8 | header( 'Content-Type: ' . feed_content_type( 'rdf' ) . '; charset=' . get_option( 'blog_charset' ), true ); |
9 | $more = 1; |
10 |
|
11 | echo '<?xml version="1.0" encoding="' . get_option( 'blog_charset' ) . '"?' . '>'; |
12 |
|
13 | /** This action is documented in wp-includes/feed-rss2.php */ |
14 | do_action( 'rss_tag_pre', 'rdf' ); |
15 | ?> |
16 | <rdf:RDF |
17 | xmlns="http://purl.org/rss/1.0/" |
18 | xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" |
19 | xmlns:dc="http://purl.org/dc/elements/1.1/" |
20 | xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" |
21 | xmlns:admin="http://webns.net/mvcb/" |
22 | xmlns:content="http://purl.org/rss/1.0/modules/content/" |
23 | <?php |