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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 |
|---|---|
| 93 | |
| 94 | if ( '' != $pagestruct ) { |
| 95 | $link = get_page_uri($id); |
| 96 | $link = str_replace('%pagename%', $link, $pagestruct); |
| 97 | $link = get_settings('home') . "/$link/"; |
| 98 | } else { |
| 99 | $link = get_settings('home') . "/?page_id=$id"; |
| 100 | } |
| 101 | |
| 102 | return apply_filters('page_link', $link, $id); |
| 103 | } |
| 104 | |
| 105 | function get_attachment_link($id = false) { |
| 106 | global $post, $wp_rewrite; |
| 107 | |
| 108 | $link = false; |
| 109 | |
| 110 | if (! $id) { |
| 111 | $id = $post->ID; |