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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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703 | * |
704 | * @return string The trackback URL after being filtered |
705 | */ |
706 | function get_trackback_url() { |
707 | if ( '' != get_option('permalink_structure') ) { |
708 | $tb_url = trailingslashit(get_permalink()) . user_trailingslashit('trackback', 'single_trackback'); |
709 | } else { |
710 | $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . get_the_ID(); |
711 | } |
712 | return apply_filters('trackback_url', $tb_url); |
713 | } |
714 |
|
715 | /** |
716 | * Displays the current post's trackback URL. |
717 | * |
718 | * @since 0.71 |
719 | * @uses get_trackback_url() Gets the trackback url for the current post |
720 | * |
721 | * @param bool $deprecated_echo Remove backwards compat in 2.5 |