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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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676 | * @return string The trackback URL after being filtered |
677 | */ |
678 | function get_trackback_url() { |
679 | global $id; |
680 | if ( '' != get_option('permalink_structure') ) { |
681 | $tb_url = trailingslashit(get_permalink()) . user_trailingslashit('trackback', 'single_trackback'); |
682 | } else { |
683 | $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . $id; |
684 | } |
685 | return apply_filters('trackback_url', $tb_url); |
686 | } |
687 |
|
688 | /** |
689 | * Displays the current post's trackback URL. |
690 | * |
691 | * @since 0.71 |
692 | * @uses get_trackback_url() Gets the trackback url for the current post |
693 | * |
694 | * @param bool $deprecated Remove backwards compat in 2.5 |