About the method of Yii Framework to obtain all subclasses under the category-PHP Tutorial-php.cn

About the method of Yii Framework to obtain all subclasses under the category

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Release： 2023-04-01 09:14:02

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This article mainly introduces the method of Yii Framework framework to obtain all subclasses under the classification. It has certain reference value. Now I share it with you. Friends in need can refer to it.

Yii is a A component-based, high-performance PHP framework for developing large-scale web applications. Yii has almost all the features, including MVC, DAO/ActiveRecord, I18N/L10N, caching, JQuery-based AJAX support, user authentication and role-based access control, scaffolding, input validation, widgets, events, theming, and web services etc.

Get all subcategories under the category:

static function getMenuTree($arrCat, $parent_id = 0, $level = 0,$all=True)
 {
  static $arrTree; //使用static代替global
  if(!$all) $arrTree =&#39;&#39;;
  if( empty($arrCat)) return FALSE;
  $level++;
  if($level == 1) $arrTree[] = $parent_id;
  foreach($arrCat as $key => $value)
  {
   if($value[&#39;parent_cid&#39; ] == $parent_id)
   {
    //$value[ &#39;level&#39;] = $level;
    $arrTree[] = $value[&#39;cid&#39;];
    unset($arrCat[$key]); //注销当前节点数据，减少已无用的遍历
    self::getMenuTree($arrCat, $value[ &#39;cid&#39;], $level);
   }
  }
  return $arrTree;
 }

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The prerequisite for using the above method is to write the category into the cache file. The method of writing cache files is as follows:

public function actionIndex2()
 {
 $filepath = Yii::getPathOfAlias(&#39;application&#39;).&#39;/data/&#39;;
 $arr = array();
 $db = Yii::app()->db;
 $listinfo = $db->createCommand("select name,cid,parent_cid,root_cid from item_cat_info")->queryAll();
 foreach($listinfo as $val)
 {
   $arr[$val[&#39;cid&#39;]] = array(&#39;cid&#39;=>$val[&#39;cid&#39;],&#39;name&#39;=>$val[&#39;name&#39;],&#39;parent_cid&#39;=>$val[&#39;parent_cid&#39;],&#39;root_cid&#39;=>$val[&#39;root_cid&#39;]);
 }

 $applist = "<?php\nreturn ".var_export($arr, true).";\n?>";
 file_put_contents($filepath.&#39;itemcat.php&#39;, $applist);
  }

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