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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 |
|---|---|
| 174 | function atom_enclosure() { |
| 175 | global $post; |
| 176 | if ( !empty($post->post_password) && ($_COOKIE['wp-postpass_'.COOKIEHASH] != $post->post_password) ) |
| 177 | return; |
| 178 | |
| 179 | foreach (get_post_custom() as $key => $val) { |
| 180 | if ($key == 'enclosure') { |
| 181 | foreach ((array)$val as $enc) { |
| 182 | $enclosure = split("\n", $enc); |
| 183 | echo apply_filters('atom_enclosure', '<link href="' . trim(htmlspecialchars($enclosure[0])) . '" rel="enclosure" length="' . trim($enclosure[1]) . '" type="' . trim($enclosure[2]) . '" />' . "\n"); |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * prep_atom_text_construct() - Determine the type of a given string of data |
| 191 | * |
| 192 | * Tell whether the type is text, html, or xhtml, per RFC 4287 section 3.1. |