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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 |
|---|---|
| 389 | foreach ( (array) get_post_custom() as $key => $val) { |
| 390 | if ($key == 'enclosure') { |
| 391 | foreach ( (array) $val as $enc ) { |
| 392 | $enclosure = explode("\n", $enc); |
| 393 | |
| 394 | // only get the first element, e.g. audio/mpeg from 'audio/mpeg mpga mp2 mp3' |
| 395 | $t = preg_split('/[ \t]/', trim($enclosure[2]) ); |
| 396 | $type = $t[0]; |
| 397 | |
| 398 | echo apply_filters('rss_enclosure', '<enclosure url="' . trim(htmlspecialchars($enclosure[0])) . '" length="' . trim($enclosure[1]) . '" type="' . $type . '" />' . "\n"); |
| 399 | } |
| 400 | } |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Display the atom enclosure for the current post. |
| 406 | * |
| 407 | * Uses the global $post to check whether the post requires a password and if |