无限级分类的写法

public function catetree(){
        $cateres = $this->select();
        return $this->sort($cateres);
    }
    
    public function sort($data,$pid=0,$level=0){
        static $arr = array();
        foreach($data as  $k => $v){
            if($v[\'pid\'] == $pid){ //pid=0 顶级栏目
                $v[\'level\']=$level;
                $arr[]= $v;
                $this->sort($data,$v[\'id\'],$v[\'level\']+1); //递归
            }
        }
        return $arr;
    }

显示分隔符的添加

<td align="left">
{if condition="$cate[\'level\'] neq 0"}|{/if}
<?php echo str_repeat(\'-\',$cate[\'level\']*5)?>
{$cate.catename}<!--str_repeat(\'-\',$cate[\'level\'])循环显示分隔符-->
</td