forked from mirror/_s
Only generate pingback url header tag when relevant.
Rationale: 1. The principle of pingbacks is based on articles. Pingbacks are a special kind of comments and the article being 'pinged-back' has to be identifiable (which they're not on archive pages and the like). 2. WP only registers a ping if it can identify the article which is supposed to have been 'pung'. See: https://developer.wordpress.org/reference/classes/wp_xmlrpc_server/pingback_ping/ 3. Pingbacks, like comments, can be disabled on a per article basis. Therefore, having the pingback url auto-discovery header in place, only makes sense on singular pages where pings are open.
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@ -15,7 +15,6 @@
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<meta charset="<?php bloginfo( 'charset' ); ?>">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="profile" href="http://gmpg.org/xfn/11">
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<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>">
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<?php wp_head(); ?>
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</head>
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@ -27,3 +27,13 @@ function _s_body_classes( $classes ) {
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return $classes;
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}
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add_filter( 'body_class', '_s_body_classes' );
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/**
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* Add a pingback url auto-discovery header for singularly identifiable articles.
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*/
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function _s_pingback_header() {
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if ( is_singular() && pings_open() ) {
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echo '<link rel="pingback" href="', bloginfo( 'pingback_url' ), '">';
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}
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}
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add_action( 'wp_head', '_s_pingback_header' );
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