PHP unlimited classification (with database) (1/2)_PHP tutorial

This is a PHP infinite-level classification code written using recursion. It is a tree-type infinite-level classification example. The infinity is achieved by using recursion. There are also more advanced writing methods, binary trees to achieve infinite classification. .

php tutorial unlimited classification (with database tutorial)
/*
This is a PHP infinite-level classification code written using recursion. It is a tree-type infinite-level classification example. The infinity is achieved by using recursion. There are also more advanced writing methods, binary trees to achieve infinite classification.
*/
?>

 $globals["id"] =1;
 $jibie=1;
 $sql="select * from tvmenu where bid=0";
 $result=mysql教程_query($sql,$conn);
 
 if(mysql_num_rows($result)>0)
 treemenu($conn,$result,$jibie,$id);
 
 function treemenu($conn,$result,$jibie)  //进入函数循环
 {
 $numrows=mysql_num_rows($result);
 echo "";
 for($rows=0;$rows<$numrows;$rows++)
 {
 $menu=mysql_fetch_array($result);
 $sql="select * from tvmenu where bid=$menu[id]";
 $result_sub=mysql_query($sql,$conn);
 echo "";
  //如果该菜单项目有子菜单，则添加javascript onclick语句
  if(mysql_num_rows($result_sub)>0)
  {
  echo "";
  echo "";
  echo "";
  if(mysql_num_rows($result_sub)>0)
  {
  echo "";
  echo "";
  echo "";
  }
  //显示下一菜单
  }
  echo "

	";   }   else   {   echo "		";   }   if($menu[url]!="")   echo "$menu[name] ";   else   echo "$menu[name]   添加  编辑  删除";   echo "
	";   //将级数加1   $jibie++;   treemenu($conn,$result_sub,$jibie);   $jibie--;   echo "

";
}
?>







 
   
 
 
   
   
 
 
   
   
 
 
   
 
 

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所属分类：	$sql="select * from tvmenu";  $que=mysql_query($sql,$conn);     while($rs=mysql_fetch_array($que)){   if ($rs['id']==$b) {      $selected="selected="selected"";      }else{      $selected="";      }  ?>         " >

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http://www.bkjia.com/PHPjc/632040.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/632040.htmlTechArticle这是一款利用递归写的php无限级分类代码，是一款树型的无限级分类实例，一的无限都是利用递归来实现的，也有更高级的写法，二叉树来...