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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 |
|---|---|
| 1 | <?php |
| 2 | |
| 3 | function the_permalink() { |
| 4 | echo apply_filters('the_permalink', get_permalink()); |
| 5 | } |
| 6 | |
| 7 | function permalink_link() { // For backwards compatibility |
| 8 | echo apply_filters('the_permalink', get_permalink()); |
| 9 | } |
| 10 | |
| 11 | function permalink_anchor($mode = 'id') { |
| 12 | global $id, $post; |
| 13 | switch(strtolower($mode)) { |
| 14 | case 'title': |
| 15 | $title = sanitize_title($post->post_title) . '-' . $id; |
| 16 | echo '<a id="'.$title.'"></a>'; |
| 17 | break; |