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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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512 | * @return string The trackback URL after being filtered |
513 | */ |
514 | function get_trackback_url() { |
515 | global $id; |
516 | if ( '' != get_option('permalink_structure') ) { |
517 | $tb_url = trailingslashit(get_permalink()) . user_trailingslashit('trackback', 'single_trackback'); |
518 | } else { |
519 | $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . $id; |
520 | } |
521 | return apply_filters('trackback_url', $tb_url); |
522 | } |
523 |
|
524 | /** |
525 | * Displays the current post's trackback URL. |
526 | * |
527 | * @since 0.71 |
528 | * @uses get_trackback_url() Gets the trackback url for the current post |
529 | * |
530 | * @param bool $deprecated Remove backwards compat in 2.5 |