Displays the nested hierarchy of sub-pages together with paging support, based on a top level page ID.
Parameters
$children_pages
arrayrequired$count
intrequired$parent_page
intrequired$level
intrequired$pagenum
intrequired$per_page
intrequired$to_display
arrayrequired- List of pages to be displayed. Passed by reference.
Source
private function _page_rows( &$children_pages, &$count, $parent_page, $level, $pagenum, $per_page, &$to_display ) {
if ( ! isset( $children_pages[ $parent_page ] ) ) {
return;
}
$start = ( $pagenum - 1 ) * $per_page;
$end = $start + $per_page;
foreach ( $children_pages[ $parent_page ] as $page ) {
if ( $count >= $end ) {
break;
}
// If the page starts in a subtree, print the parents.
if ( $count === $start && $page->post_parent > 0 ) {
$my_parents = array();
$my_parent = $page->post_parent;
while ( $my_parent ) {
// Get the ID from the list or the attribute if my_parent is an object.
$parent_id = $my_parent;
if ( is_object( $my_parent ) ) {
$parent_id = $my_parent->ID;
}
$my_parent = get_post( $parent_id );
$my_parents[] = $my_parent;
if ( ! $my_parent->post_parent ) {
break;
}
$my_parent = $my_parent->post_parent;
}
$num_parents = count( $my_parents );
while ( $my_parent = array_pop( $my_parents ) ) {
$to_display[ $my_parent->ID ] = $level - $num_parents;
--$num_parents;
}
}
if ( $count >= $start ) {
$to_display[ $page->ID ] = $level;
}
++$count;
$this->_page_rows( $children_pages, $count, $page->ID, $level + 1, $pagenum, $per_page, $to_display );
}
unset( $children_pages[ $parent_page ] ); // Required in order to keep track of orphans.
}
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