如何实现树节点的增删改?
数据库为MySQL,数据表结构如下:
id type name parentid
1 0 service 0
101 82 data 0
102 82 card 101
103 82 search 101
104 82 web 102
105 83 task 103
parentid为0表示是顶级。用PHP该如何实现该数据表的配置页面呢?
------解决方案--------------------
数据量不大的话不建议用插件,以免造成项目结构混乱。核心是递归思想。
<br />function dafenglei_arr($m,$id)<br />{<br /> global $class_arr;<br /> global $classid;<br /> global $mysql;<br /> if($id=="") $id=0;<br /> $n = str_pad('',$m,'-',STR_PAD_RIGHT);<br /> $n = str_replace("-"," ",$n);<br /> for($i=0;$i<count($class_arr);$i++){<br /> if($class_arr[$i][2]==$id){<br /> echo "<tr>\n";<br /> echo " <td>".$n."<br><font color='#FF8000'>------解决方案--------------------</font><br>----<a href=\"?action=edit&id=".$class_arr[$i][0]."\">".$class_arr[$i][1]."</a></td>\n";<br /> echo " <td><div align=\"center\">".$class_arr[$i][3]."</div></td>\n";<br /> echo " <td><div align=\"center\"><a href=\"?action=edit&id=".$class_arr[$i][0]."\">修改</a>";<br /> echo " <a href=\"?action=del&id=".$class_arr[$i][0]."\">删除</a>";<br /> echo "</div></td>\n";<br /> echo " </tr>\n"; <br /> dafenglei_arr($m+1,$class_arr[$i][0]);<br /> } <br /> }<br />}<br />

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