thinkPHP implements recursive loop columns and outputs infinitely according to the tree structure, thinkphp recursion_PHP tutorial

thinkPHP implements a recursive loop column and outputs it infinitely according to the tree structure, thinkphp recursive

This article describes the example of thinkPHP implementing a recursive loop column and outputs it infinitely according to the tree structure method. Share it with everyone for your reference, the details are as follows:

Here we use thinkphp recursive loop column to output infinitely according to the tree structure and save it as an array, which is convenient for template calling

The specific code is as follows:

private function categoryTree($parentid,$level)
//因为是本类中使用所以定于为私有函数
{
$Category= D('Category');
$result = $Category->where("`parentid`=".$parentid)->order("listorder desc,catid desc")->select();
if($result)
{
$count=count($result);//当前子栏目个数
$level++;//子栏目层级
foreach($result as $v)
{
$index++;
if($count==$index) $step="└─";
else $step="├─";
$step.=str_repeat('  ',$level-1);
$nbsp=str_repeat('   ',$level-1);
$nstr=$nbsp.$step;
if($parentid==0) $nstr='';
$v['step']=$nstr;
$newData[$v['catid']]=$v;
//echo $nstr.$v['catname']."<br />";
if($v['child']==1)//如果有子栏目
{
$newData=$newData+$this->categoryTree($v['catid'],$level);
}
}
}
return $newData;
}

php recursive columns are saved as arrays

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Readers who are interested in more thinkPHP-related content can check out the special topics on this site: "ThinkPHP Getting Started Tutorial", "ThinkPHP Common Methods Summary", "Smarty Template Basic Tutorial" and "PHP Template Technology Summary".

I hope this article will be helpful to everyone’s PHP programming based on the ThinkPHP framework.

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