wp-includes/comment-template.php:1280Generates and displays the RDF for the trackback information of current post.
$deprecatedint|stringoptional''function trackback_rdf( $deprecated = '' ) { if ( ! empty( $deprecated ) ) { _deprecated_argument( __FUNCTION__, '2.5.0' ); } if ( isset( $_SERVER['HTTP_USER_AGENT'] ) && false !== stripos( $_SERVER['HTTP_USER_AGENT'], 'W3C_Validator' ) ) { return; } echo '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/"> <rdf:Description rdf:about="'; the_permalink(); echo '"' . "\n"; echo ' dc:identifier="'; the_permalink(); echo '"' . "\n"; echo ' dc:title="' . str_replace( '--', '--', wptexturize( strip_tags( get_the_title() ) ) ) . '"' . "\n"; echo ' trackback:ping="' . get_trackback_url() . '"' . " />\n"; echo '</rdf:RDF>';}Introduced in 0.71. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/comment-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.