Performs all pingbacks, enclosures, trackbacks, and sends to pingback services.
Source
if ( is_wp_error( $response ) ) {
return false;
}
$contents = wp_remote_retrieve_body( $response );
$pingback_link_offset_dquote = strpos( $contents, $pingback_str_dquote );
$pingback_link_offset_squote = strpos( $contents, $pingback_str_squote );
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