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PHP 递归生成树状行实例代码

WBOY
WBOYOriginal
2016-06-13 10:39:471442browse

本文介绍 PHP 递归生成树状行实例代码

  2.    header("content-type: text/html; charset=utf-8");
  3.    $connect = mysql_connect(localhost, root, 123456);
  4.    mysql_select_db("wz");
  5.    mysql_query("set names utf8");
  6.     //获得顶节点
  7.    $sql = "select id, name,ischild from tree where parent = 0 order by id asc";
  8.    $result = mysql_query($sql);
  9.    while($row = mysql_fetch_array($result))
  10.    {
  11.       extract($row);
  12.          //如果有子节点，就在前面加个事件，以便展开或者关闭子节点
  13.       $icon = $ischild ? " ":"-";
  14.       $name = $icon . $name;
  15.       echo "
    " . $name;
  16.       if($ischild)
  17.        {
  18.                   //递归获取节点
  19.            getNode($id, 0);
  20.       }
  21.       echo "
";
  •    }
  •    function getNode($id, $level)
  •    {
  •       $sql = "select id, name, ischild from tree where parent = $id order by id asc ";
  •        $result = mysql_query($sql);
  •       $level ;
  •      while($row = mysql_fetch_array($result))
  •     {
  •          extract($row);
  •            $icon = $ischild ? " ":"-";
  •           $name = $icon . $name;  
  •           echo "
    " . echoChar("    ", $level)  . $name;
  •          if($ischild)
  •            {
  •              getNode($id, $level);
  •           }
  •           echo "
    • ";
  •      }
  •    }
  •    
  •   function echoChar($char, $num)
  •   {
  •        for($i=0;$i
  •       {
  •           $strChar .= $char;
  •       }
  •       return $strChar;
  •    }
  •    ?>
  •   
  •        function expand(id)
  •       {
  •            var obj = document.getElementById(id).childNodes;
  •            for(var i=0;i
  •            {
  •               if(obj[i].nodeName == "DIV")
  •                {
  •                    switch(obj[i].style.display)
  •                   {
  •                        case "":
  •                        case "block":
  •                         obj[i].style.display = "none";
  •                         break;
  •                       case "none":
  •                         obj[i].style.display = "block";
  •                         break;
  •                    }
  •                }
  •            }
  •        }
  •   

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