get_parent_post_rel_link( string $title = '%title' ): string

2773function get_parent_post_rel_link( $title = '%title' ) {2774	_deprecated_function( __FUNCTION__, '3.3.0' );2775 2776	if ( ! empty( $GLOBALS['post'] ) && ! empty( $GLOBALS['post']->post_parent ) )2777		$post = get_post($GLOBALS['post']->post_parent);2778 2779	if ( empty($post) )2780		return;2781 2782	$date = mysql2date(get_option('date_format'), $post->post_date);2783 2784	$title = str_replace('%title', $post->post_title, $title);2785	$title = str_replace('%date', $date, $title);2786	/** This filter is documented in wp-includes/post-template.php */2787	$title = apply_filters('the_title', $title, $post->ID);2788 2789	$link = "<link rel='up' title='";2790	$link .= esc_attr( $title );2791	$link .= "' href='" . get_permalink($post) . "' />\n";2792 2793	return apply_filters( "parent_post_rel_link", $link );2794}