phpcms的栏目缓存无限级罗列展示处理方法

<?php
$a = include_once('D:\\web\\www\\phpcms.test\\caches\\caches_commons\\caches_data\\category_content_3.cache.php');


function getNav($cid){//组织导航
	global $a;
	$n = array();
	if (empty($cid) || empty($a[$cid])) return $n;
	//当前
	$n[] = "<a href=\"?cid={$cid}\">{$a[$cid]['catname']}</a>";
	
	if ($a[$cid]['parentid']) {//有父id
		//前面的在当前前面
		$n = array_merge(getNav($a[$cid]['parentid']), $n);
	}
	
	return $n;
}

$cid = (int)$_GET['cid'];
$n = getNav($cid);
echo "<a href=\"?cid={$cid}\">chrd</a>>" .implode('>', $n);

echo '<p>kkkkk</p>';



function doTop($cid){//顶级的处理
	global $a;
	$n = array();
	$n[] = "<a href=\"?cid={$cid}\">{$a[$cid]['catname']}</a>";//顶级本身
	//如果需要把同顶级的栏目罗列在这里处理
	return implode('|', $n);
}

function getSub($cid, $focusId = 0){//取子类+有父就递归
	global $a;
	$n = array();
	if (empty($a[$cid])) return $n;//数组无cid
	$pid = (int)$a[$cid]['parentid'];//父id
	$cs = $a[$cid]['arrchildid'];//子类id
	!empty($cs) && ($cs = explode(',', $cs) );
	
	if (empty($pid)) {//顶级父类处理
		$n[] = doTop($cid);
	} else {//有父类
		$n = array_merge(getSub($pid, $cid), $n);//合并时,父条在前
	}
	
	if (!empty($cs)) {//有子类
		$sn = array();
		$pInSub = 0;
		$sub = 0;//是否有子类
		
		foreach ($cs as $c) {//只使用子类,顶级及本身与孙类排除			
			if (0 == $c ){ //顶级?
				//echo '0';
				continue;
			}
			
			if (empty($a[$c])) { //数组中没保存到
				//echo '2';
				continue;
			}
			
			if ($cid == $c) {//本身
				//echo '3';
				continue;
			}
			
			if ($cid != $a[$c]['parentid']) {//孙级,pid不是自己
				//echo 'p';
				continue;
			}
			
			$sub = 1;//有子类
			
			if ( $focusId && ($focusId == $c) ) {
				$pInSub = 1;//是否出现在子类中
				$lf = '<span class="focusCatid">[';
				$rf = ']</span>';
			} else {
				$lf = $rf = '';
			}
			$sn[] = "{$lf}<a class=\"catId\" href=\"?cid={$c}\">{$a[$c]['catname']}</a>{$rf}";
		}
		
		
		if (!$pInSub) {//不出现在子类中,高亮全部
			$lf = '<span class="focusCatid">[';
			$rf = ']</span>';
		} else {			
			$lf = $rf = '';
		}
		
		$all = $sub ? "{$lf}<a class=\"catId\" href=\"?cid={$cid}\">全部</a>{$rf}|" : '';//本子类的全部就是本子类的上级
		$n[] = $all. implode('|', $sn);
	}	
	
	return $n;
}


$n = getSub($cid);
echo empty($n) ? '无' : implode('<hr >', $n);