打造PHP的无限分级类(完整代码及注释)_PHP教程
下面提供一个PHP的无限分级类代码,想要实现无限分级类的朋友们可以试试。Bug已经检查修正过,直接复制代码就能使用尖括号需要替换一下)。
1、数据库ProductShow中有b_mtype表,建表语句如下:
<ol class="dp-sql"> <li class="alt"><span><span class="keyword">CREATE</span><span> </span><span class="keyword">TABLE</span><span> `b_mtype` ( </span></span></li> <li class=""> <span> `typeid` </span><span class="keyword">int</span><span>(4) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">'0'</span><span>, </span> </li> <li class="alt"> <span> `typename` </span><span class="keyword">varchar</span><span>(50) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">''</span><span>, </span> </li> <li class=""> <span> `parentid` </span><span class="keyword">int</span><span>(4) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">'0'</span><span>, </span> </li> <li class="alt"> <span> `parentstr` </span><span class="keyword">varchar</span><span>(200) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">''</span><span>, </span> </li> <li class=""> <span> `depth` </span><span class="keyword">int</span><span>(4) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">'0'</span><span>, </span> </li> <li class="alt"> <span> `rootid` </span><span class="keyword">int</span><span>(4) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">'0'</span><span>, </span> </li> <li class=""> <span> `child` </span><span class="keyword">varchar</span><span>(200) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">''</span><span>, </span> </li> <li class="alt"> <span> `orders` </span><span class="keyword">varchar</span><span>(200) </span><span class="op">NOT</span><span> </span><span class="op">NULL</span><span> </span><span class="keyword">default</span><span> </span><span class="string">''</span><span>, </span> </li> <li class=""> <span> </span><span class="keyword">PRIMARY</span><span> </span><span class="keyword">KEY</span><span> (`typeid`) </span> </li> <li class="alt"><span>) TYPE=MyISAM; </span></li> <li class=""><span> </span></li> </ol>
2、ProductClass.php代码:直接复制即可)
<ol class="dp-c"> <li class="alt"><span><span> </span></span></li> <li class=""><span> </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"Content-Type"</font></span><span> content=</span><span class="string"><font color="#0000ff">"text/html; charset=gb2312"</font></span><span> /> </span></span></li> <li class=""><span>WHB_PHP无限级分类 </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"text/css"</font></span><span>> </span></span></li> <li class=""><span><li class="alt"><span>.STYLE1 {color: #FF0000} </span></li> <li class=""><span>body,td,th { </span></li> <li class="alt"><span> font-family: 宋体; </span></li> <li class=""><span> font-size: 12px; </span></li> <li class="alt"><span>} </span></li> <li class=""><span>.STYLE2 { </span></li> <li class="alt"><span> color: #FFFFFF; </span></li> <li class=""><span> font-size: 14px; </span></li> <li class="alt"><span> font-weight: bold; </span></li> <li class=""><span>} </span></li> <li class="alt"><span>--> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span><li class="alt"> <span></span><span class="func">ini_set</span><span>(</span><span class="string"><font color="#0000ff">"error_reporting"</font></span><span>,</span><span class="string"><font color="#0000ff">"E_ALL & ~E_NOTICE"</font></span><span>);</span><span class="comment"><font color="#008200">//忽略所有警告信息 </font></span><span> </span> </li></span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">require_once</font></strong></span><span>(</span><span class="string"><font color="#0000ff">"conn.php"</font></span><span>);</span><span class="comment"><font color="#008200">//嵌入连接文件 </font></span><span> </span> </li></span></li> <li class="alt"> <span> @</span><span class="vars"><font color="#dd0000">$ToDo</font></span><span>=</span><span class="vars"><font color="#dd0000">$_GET</font></span><span>[</span><span class="string"><font color="#0000ff">"ToDo"</font></span><span>]; </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">switch</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$ToDo</font></span><span>) </span> </li> <li class="alt"><span> { </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">"add"</font></span><span>: </span> </li> <li class="alt"> <span> </span><span class="func">echo</span><span> add(); </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>; </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">"edit"</font></span><span>: </span> </li> <li class="alt"> <span> </span><span class="func">echo</span><span> edit(); </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>; </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">"saveadd"</font></span><span>: </span> </li> <li class="alt"> <span> </span><span class="func">echo</span><span> saveadd(); </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>; </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">"saveedit"</font></span><span>: </span> </li> <li class="alt"> <span> </span><span class="func">echo</span><span> saveedit(); </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>; </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">case</font></strong></span><span> </span><span class="string"><font color="#0000ff">"del"</font></span><span>: </span> </li> <li class="alt"> <span> </span><span class="func">echo</span><span> del(); </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>; </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">default</font></strong></span><span>: </span> </li> <li class="alt"><span>?> </span></li> <li class=""><span> </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"90%"</font></span><span> border=</span><span class="string"><font color="#0000ff">"0"</font></span><span> align=</span><span class="string"><font color="#0000ff">"center"</font></span><span> cellpadding=</span><span class="string"><font color="#0000ff">"0"</font></span><span> cellspacing=</span><span class="string"><font color="#0000ff">"0"</font></span><span> </span><span class="keyword"><strong><font color="#006699">class</font></strong></span><span>=</span><span class="string"><font color="#0000ff">"tblborder"</font></span><span>> </span></span></li> <li class=""><span> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"top"</font></span><span>><span class="string"><font color="#0000ff">"100%"</font></span><span> border=</span><span class="string"><font color="#0000ff">"0"</font></span><span> cellspacing=</span><span class="string"><font color="#0000ff">"1"</font></span><span> cellpadding=</span><span class="string"><font color="#0000ff">"3"</font></span><span>> </span></span><li class=""><span> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"55%"</font></span><span> height=</span><span class="string"><font color="#0000ff">"20"</font></span><span> align=</span><span class="string"><font color="#0000ff">"center"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#698FC7"</font></span><span>><span class="keyword"><strong><font color="#006699">class</font></strong></span><span>=</span><span class="string"><font color="#0000ff">"tblhead"</font></span><span>><span class="keyword"><strong><font color="#006699">class</font></strong></span><span>=</span><span class="string"><font color="#0000ff">"STYLE2"</font></span><span>>商品类别设置 <span class="string"><font color="#0000ff">"?ToDo=add"</font></span><span>>添加一个新类别 </span></span><li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"100%"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#cccccc"</font></span><span> cellspacing=</span><span class="string"><font color="#0000ff">"1"</font></span><span> cellpadding=</span><span class="string"><font color="#0000ff">"3"</font></span><span>> </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"#F9F9F9"</font></span><span>> </span></span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"6%"</font></span><span> height=</span><span class="string"><font color="#0000ff">"21"</font></span><span>>ID </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"49%"</font></span><span>>类别名称 </span></span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"14%"</font></span><span>>排序 </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"31%"</font></span><span>>操作 </span></span></li> <li class="alt"><span> </span></li> <li class=""><span> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select * from b_mtype order by rootid,orders"</font></span><span>); </span> </li></span></li> <li class="alt"> <span> </span><span class="keyword"><strong><font color="#006699">while</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$query</font></span><span>)) </span> </li></span><li class=""><span> { </span></li> <li class="alt"><span> </span></li> <li class=""><span> ?> </span></li> <li class="alt"><span> </span></li> <li class=""><span> <span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>><span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typeid"</font></span><span>];?> </span></span><li class="alt"><span> <span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>]>0) { </span></span><li class=""> <span> </span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$i</font></span><span>=1;</span><span class="vars"><font color="#dd0000">$i</font></span><span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>];</span><span class="vars"><font color="#dd0000">$i</font></span><span>++){ </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">" "</font></span><span>;} </span></span> </li> <li class="alt"><span> }?> </span></li> <li class=""><span> </span></li> <li class="alt"><span> <span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"child"</font></span><span>]>0) { </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"+"</font></span><span>;}</span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span> {</span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"-"</font></span><span>;}?> </span></span></li> <li class=""><span> <span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"parentid"</font></span><span>]==0) { </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>;}?> </span></span></li> <li class="alt"><span> <span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typename"</font></span><span>];?> </span></span></li> <li class=""><span> <span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"child"</font></span><span>]>0) {?>(<span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"child"</font></span><span>];?>) </span></span><li class="alt"><span> <span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>><span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"orders"</font></span><span>];?> </span></span><li class=""><span> <span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>><span class="string"><font color="#0000ff">"?ToDo=add&editid=</font></span><span>typeid</span><span class="string"><font color="#0000ff">"];?>"</font></span><span>>添加子类 </span></span><li class="alt"><span> | <span class="string"><font color="#0000ff">"?ToDo=edit&editid=</font></span><span>typeid</span><span class="string"><font color="#0000ff">"]?>"</font></span><span>>编辑类别 </span></span></li> <li class=""><span> | <span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"child"</font></span><span>]==0){?><span class="string"><font color="#0000ff">"?ToDo=del&editid=</font></span><span>typeid</span><span class="string"><font color="#0000ff">"];?>"</font></span><span> onClick=</span><span class="string"><font color="#0000ff">"{if(confirm('删除类别时,该类别下的所有产品将一并被删除,确定删除吗?')){return true;}return false;}"</font></span><span>>删除类别<span class="keyword"><strong><font color="#006699">else</font></strong></span><span>{?><span class="string"><font color="#0000ff">"#"</font></span><span> onClick=</span><span class="string"><font color="#0000ff">"{if(confirm('该类别含有下属类别,必须先删除其下属类别方能删除本类别!')){return true;}return false;}"</font></span><span>>删除类别 </span></span><li class="alt"><span> </span></li> <li class=""><span> <li class="alt"><span> } </span></li> <li class=""><span> ?> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span><li class=""> <span> </span><span class="keyword"><strong><font color="#006699">break</font></strong></span><span>; </span> </li></span></li> <li class="alt"><span> } </span></li> <li class=""><span> ?> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span><span class="comment"><font color="#008200">///增加类别 </font></span><span> </span></span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span> add(){ </span> </li></span></li> <li class="alt"> <span> @</span><span class="vars"><font color="#dd0000">$editid</font></span><span>=</span><span class="vars"><font color="#dd0000">$_REQUEST</font></span><span>[</span><span class="string"><font color="#0000ff">"editid"</font></span><span>]; </span> </li></span><li class=""><span>?> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"form1"</font></span><span> method=</span><span class="string"><font color="#0000ff">"post"</font></span><span> action=</span><span class="string"><font color="#0000ff">"?ToDo=saveadd"</font></span><span>> </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"90%"</font></span><span> align=</span><span class="string"><font color="#0000ff">"center"</font></span><span> cellpadding=</span><span class="string"><font color="#0000ff">"3"</font></span><span> cellspacing=</span><span class="string"><font color="#0000ff">"1"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#CCCCCC"</font></span><span>> </span></span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"#CCCCCC"</font></span><span>> </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"2"</font></span><span> align=</span><span class="string"><font color="#0000ff">"center"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#698FC7"</font></span><span>><span class="keyword"><strong><font color="#006699">class</font></strong></span><span>=</span><span class="string"><font color="#0000ff">"STYLE2"</font></span><span>>创建新的类别 </span></span><li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"25%"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>>类别名称: </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"75%"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>><span class="string"><font color="#0000ff">"typename"</font></span><span> type=</span><span class="string"><font color="#0000ff">"text"</font></span><span> id=</span><span class="string"><font color="#0000ff">"typename"</font></span><span>> </span></span><li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"25%"</font></span><span> height=30 bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>>所属类别 </span></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"75%"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>> </span></span></li> <li class="alt"><span> </span></li> <li class=""><span> <span class="string"><font color="#0000ff">"0"</font></span><span>>做为主类别 </span></span></li> <li class="alt"><span> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select * from b_mtype order by rootid,orders"</font></span><span>); </span> </li></span></li> <li class="alt"> <span> </span><span class="keyword"><strong><font color="#006699">while</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$query</font></span><span>)){ ?> </span> </li></span></li> <li class=""><span> <span class="string"><font color="#0000ff">"</font></span><span>typeid</span><span class="string"><font color="#0000ff">"]?>"</font></span><span> <span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$editid</font></span><span> == </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">'typeid'</font></span><span>]){ </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">" selected"</font></span><span>; }?>> </span></span><li class="alt"><span> <span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>]>0) { </span></span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$i</font></span><span>=1;</span><span class="vars"><font color="#dd0000">$i</font></span><span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>];</span><span class="vars"><font color="#dd0000">$i</font></span><span>++) </span></span> </li> <li class="alt"><span> { </span></li> <li class=""> <span> </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"-"</font></span><span>; </span> </li></span></li> <li class="alt"><span> } </span></li> <li class=""><span> </span></li> <li class="alt"><span> }?> </span></li> <li class=""><span> <span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typename"</font></span><span>]?> </span></span></li> <li class="alt"><span> <li class=""><span> } </span></li> <li class="alt"><span> ?> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> <span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>> </span></span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>><span class="string"><font color="#0000ff">"submit"</font></span><span> name=</span><span class="string"><font color="#0000ff">"Submit"</font></span><span> value=</span><span class="string"><font color="#0000ff">"保存"</font></span><span>> </span></span><li class=""><span> </span></li> <li class="alt"><span> <span class="string"><font color="#0000ff">"button"</font></span><span> name=</span><span class="string"><font color="#0000ff">"cancel"</font></span><span> id=</span><span class="string"><font color="#0000ff">"cancel"</font></span><span> value=</span><span class="string"><font color="#0000ff">"返回"</font></span><span> onclick=</span><span class="string"><font color="#0000ff">"history.go(-1);"</font></span><span> /> </span></span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span><span class="comment"><font color="#008200">/////保存增加的类别 </font></span><span> </span></span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span> saveadd(){ </span> </li></span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select typeid from b_mtype order by typeid desc limit 1"</font></span><span>); </span> </li></span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">while</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$query</font></span><span>)){ </span> </li></span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (!</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typeid"</font></span><span>]){ </span> </li></span><li class=""> <span> </span><span class="vars"><font color="#dd0000">$postnum</font></span><span>=1; </span> </li></span></li> <li class="alt"><span> </span></li> <li class=""> <span>}</span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span>{ </span> </li></span></li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$postnum</font></span><span>=</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typeid"</font></span><span>]+1; </span> </li></span></li> <li class=""><span> </span></li> <li class="alt"><span>} </span></li> <li class=""><span>} </span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(!</span><span class="vars"><font color="#dd0000">$postnum</font></span><span>) </span><span class="vars"><font color="#dd0000">$postnum</font></span><span>=1; </span> </li></span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="vars"><font color="#dd0000">$ntid</font></span><span> =</span><span class="vars"><font color="#dd0000">$postnum</font></span><span>; </span> </li></span></li> <li class=""> <span></span><span class="vars"><font color="#dd0000">$tn</font></span><span> =</span><span class="vars"><font color="#dd0000">$_REQUEST</font></span><span>[</span><span class="string"><font color="#0000ff">"typename"</font></span><span>]; </span> </li></span></li> <li class="alt"> <span></span><span class="vars"><font color="#dd0000">$btype</font></span><span> =</span><span class="vars"><font color="#dd0000">$_REQUEST</font></span><span>[</span><span class="string"><font color="#0000ff">"btype"</font></span><span>]; </span> </li></span><li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="comment"><font color="#008200">//echo $btype; </font></span><span> </span> </li></span></li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$ntid</font></span><span>==</span><span class="string"><font color="#0000ff">""</font></span><span> </span><span class="keyword"><strong><font color="#006699">or</font></strong></span><span> </span><span class="vars"><font color="#dd0000">$tn</font></span><span>==</span><span class="string"><font color="#0000ff">""</font></span><span>) </span> </li></span></li> <li class="alt"><span>{ </span></li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"alert('参数有误,请重新填写.!');"</font></span><span>; </span> </li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"location.href='?';"</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">die</font></strong></span><span>(); </span> </li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$btype</font></span><span>!=0){ </span> </li> <li class=""><span> </span></li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$result</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select rootid,typeid,depth,orders,parentstr from b_mtype where typeid='$btype'"</font></span><span>); </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$aa</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$result</font></span><span>); </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$rootid</font></span><span>=</span><span class="vars"><font color="#dd0000">$aa</font></span><span>[</span><span class="string"><font color="#0000ff">'rootid'</font></span><span>]; </span> </li> <li class=""> <span> </span><span class="comment"><font color="#008200">//echo "aaaaaaaaaaa"; </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$parentid</font></span><span>=</span><span class="vars"><font color="#dd0000">$aa</font></span><span>[</span><span class="string"><font color="#0000ff">'typeid'</font></span><span>]; </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$depth</font></span><span>=</span><span class="vars"><font color="#dd0000">$aa</font></span><span>[</span><span class="string"><font color="#0000ff">'depth'</font></span><span>]; </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$orders</font></span><span>=</span><span class="vars"><font color="#dd0000">$aa</font></span><span>[</span><span class="string"><font color="#0000ff">'orders'</font></span><span>]; </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$parentstr</font></span><span>=</span><span class="vars"><font color="#dd0000">$aa</font></span><span>[</span><span class="string"><font color="#0000ff">'parentstr'</font></span><span>]; </span> </li> <li class="alt"> <span> </span><span class="comment"><font color="#008200">//echo $rootid; </font></span><span> </span> </li> <li class=""><span> </span></li> <li class="alt"> <span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span>((</span><span class="vars"><font color="#dd0000">$aa</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>]+1)>20){ </span><span class="keyword"><strong><font color="#006699">die</font></strong></span><span>(</span><span class="string"><font color="#0000ff">"本分类限制最多只能有20级分类"</font></span><span>); } </span> </li> <li class=""><span> </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$ntid</font></span><span> == </span><span class="vars"><font color="#dd0000">$btype</font></span><span>) </span> </li> <li class=""><span>{ </span></li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"alert('您所指定的typeid值重复!');"</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"location.href='?';"</font></span><span>; </span> </li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">die</font></strong></span><span>(); </span> </li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$btype</font></span><span>!=0){ </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$depth</font></span><span>=</span><span class="vars"><font color="#dd0000">$depth</font></span><span>+1; </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$rootid</font></span><span>=</span><span class="vars"><font color="#dd0000">$rootid</font></span><span>; </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$orders</font></span><span> =</span><span class="vars"><font color="#dd0000">$ntid</font></span><span>; </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$parentid</font></span><span> =</span><span class="vars"><font color="#dd0000">$btype</font></span><span>; </span> </li> <li class=""> <span> </span><span class="comment"><font color="#008200">//$child = $child; </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$parentstr</font></span><span>==</span><span class="string"><font color="#0000ff">"0"</font></span><span>){ </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$parentstr</font></span><span>=</span><span class="vars"><font color="#dd0000">$btype</font></span><span>; </span> </li> <li class="alt"> <span> }</span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span>{ </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$parentstr</font></span><span>=</span><span class="vars"><font color="#dd0000">$parentstr</font></span><span>.</span><span class="string"><font color="#0000ff">","</font></span><span>.</span><span class="vars"><font color="#dd0000">$btype</font></span><span>; </span> </li> <li class="alt"><span> } </span></li> <li class=""><span> </span></li> <li class="alt"> <span>}</span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span>{ </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$depth</font></span><span>=0; </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$rootid</font></span><span>=</span><span class="vars"><font color="#dd0000">$ntid</font></span><span>; </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$orders</font></span><span>=1; </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$parentid</font></span><span>=0; </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$child</font></span><span>=0; </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$parentstr</font></span><span>=0; </span> </li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="comment"><font color="#008200">//插入类别 </font></span><span> </span> </li> <li class="alt"> <span></span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"insert into b_mtype values('$ntid','$tn','$parentid','$parentstr','$depth','$rootid','','$orders')"</font></span><span>) ; </span> </li> <li class=""> <span></span><span class="comment"><font color="#008200">//用于调试 echo "insert into b_mtype values('$ntid','$tn','$parentid','$parentstr','$depth','$rootid','','$orders')"; </font></span><span> </span> </li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$btype</font></span><span>!=0) </span> </li> <li class="alt"><span> { </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$depth</font></span><span>>0) </span> </li> <li class="alt"><span> { </span></li> <li class=""> <span> </span><span class="comment"><font color="#008200">//当上级分类深度大于0的时候要更新其父类或父类的父类)的版面数和相关排序 </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$i</font></span><span>=1;</span><span class="vars"><font color="#dd0000">$i</font></span><span><span class="vars"><font color="#dd0000">$depth</font></span><span>;</span><span class="vars"><font color="#dd0000">$i</font></span><span>++){ </span></span> </li> <li class=""> <span> </span><span class="comment"><font color="#008200">//更新其父类版面数 </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$parentid</font></span><span>!=</span><span class="string"><font color="#0000ff">""</font></span><span>){ </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"update b_mtype set child=child+1 where typeid='$parentid'"</font></span><span>); </span> </li> <li class="alt"><span> } </span></li> <li class=""> <span> </span><span class="comment"><font color="#008200">//得到其父类的父类的版面ID </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$result</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select parentid from b_mtype where typeid='$parentid'"</font></span><span>); </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$par</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$result</font></span><span>); </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$par</font></span><span>[</span><span class="string"><font color="#0000ff">'parentid'</font></span><span>]!=</span><span class="string"><font color="#0000ff">""</font></span><span>){ </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$parentid</font></span><span>=</span><span class="vars"><font color="#dd0000">$par</font></span><span>[</span><span class="string"><font color="#0000ff">'parentid'</font></span><span>]; </span> </li> <li class=""><span> } </span></li> <li class="alt"> <span> </span><span class="comment"><font color="#008200">//当循环次数大于1并且运行到最后一次循环的时候直接进行更新 </font></span><span> </span> </li> <li class=""> <span> </span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$i</font></span><span>==</span><span class="vars"><font color="#dd0000">$depth</font></span><span> && </span><span class="vars"><font color="#dd0000">$parentid</font></span><span>!=</span><span class="string"><font color="#0000ff">""</font></span><span>){ </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"update b_mtype set child=child+1 where typeid='$parentid'"</font></span><span>); </span> </li> <li class=""><span> } </span></li> <li class="alt"> <span> }</span><span class="comment"><font color="#008200">//for循环结束 </font></span><span> </span> </li> <li class=""> <span> </span><span class="comment"><font color="#008200">//更新该版面排序以及大于本需要和同在本分类下的版面排序序号 </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"update b_mtype set orders=orders+1 where rootid='$rootid' and orders>'$orders'"</font></span><span>); </span> </li> <li class=""> <span> </span><span class="comment"><font color="#008200">//$orders1=$orders+1; </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="comment"><font color="#008200">//echo "orders1=".$orders1; </font></span><span> </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"update b_mtype set orders='$orders'+1 where typeid='$ntid'"</font></span><span>); </span> </li> <li class="alt"><span> </span></li> <li class=""> <span> }</span><span class="keyword"><strong><font color="#006699">else</font></strong></span><span>{ </span><span class="comment"><font color="#008200">//对应if ($depth>0),当上级分类深度为0的时候只要更新上级分类版面数和该版面排序序号即可 </font></span><span> </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"update b_mtype set child=child+1 where typeid='$btype'"</font></span><span>); </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$result</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select max(orders) from b_mtype where typeid='$ntid'"</font></span><span>); </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000">$ord</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$result</font></span><span>); </span> </li> <li class=""> <span> </span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"update b_mtype set orders='$ord[0]'+1 where typeid='$ntid'"</font></span><span>); </span> </li> <li class="alt"><span> } </span></li> <li class=""><span> </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"alert('类别添加成功!');"</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"location.href='?';"</font></span><span>; </span> </li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class="alt"><span>} </span></li> <li class=""><span>?> </span></li> <li class="alt"><span> </span></li> <li class=""><span><span class="comment"><font color="#008200">////修改设置 </font></span><span> </span></span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">function</font></strong></span><span> edit(){ </span> </li> <li class=""> <span> </span><span class="comment"><font color="#008200">//global $db,$editid,$tn,$arr; </font></span><span> </span> </li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="vars"><font color="#dd0000">$editid</font></span><span>=</span><span class="vars"><font color="#dd0000">$_REQUEST</font></span><span>[</span><span class="string"><font color="#0000ff">"editid"</font></span><span>]; </span> </li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="vars"><font color="#dd0000">$result</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select * from b_mtype where typeid='$editid'"</font></span><span>); </span> </li> <li class="alt"> <span></span><span class="vars"><font color="#dd0000">$tn</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$result</font></span><span>); </span> </li> <li class=""><span>?> </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"form2"</font></span><span> action =</span><span class="string"><font color="#0000ff">"?ToDo=saveedit"</font></span><span> method=</span><span class="string"><font color="#0000ff">"post"</font></span><span>> </span></span></li> <li class=""><span><span class="string"><font color="#0000ff">"hidden"</font></span><span> name=</span><span class="string"><font color="#0000ff">"editid"</font></span><span> value=</span><span class="string"><font color="#0000ff">""</font></span><span>> </span></span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"90%"</font></span><span> border=</span><span class="string"><font color="#0000ff">"0"</font></span><span> align=center cellpadding=</span><span class="string"><font color="#0000ff">"3"</font></span><span> cellspacing=</span><span class="string"><font color="#0000ff">"1"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#CCCCCC"</font></span><span>> </span></span></li> <li class=""><span> </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"#698FC7"</font></span><span> </span><span class="keyword"><strong><font color="#006699">class</font></strong></span><span>=</span><span class="string"><font color="#0000ff">"STYLE2"</font></span><span>>编辑类别:<span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$tn</font></span><span>[</span><span class="string"><font color="#0000ff">"typename"</font></span><span>];?> </span></span><li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span><span class="string"><font color="#0000ff">"44%"</font></span><span> height=30 bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>>类别名称 </span></span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"56%"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>> </span></span></li> <li class=""><span><span class="string"><font color="#0000ff">"text"</font></span><span> name=</span><span class="string"><font color="#0000ff">"typename"</font></span><span> size=</span><span class="string"><font color="#0000ff">"35"</font></span><span> value=</span><span class="string"><font color="#0000ff">"</font></span><span>typename</span><span class="string"><font color="#0000ff">"];?>"</font></span><span>> </span></span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"44%"</font></span><span> height=30 bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>>所属类别 </span></span></li> <li class=""><span> <span class="keyword"><strong><font color="#006699">class</font></strong></span><span>=</span><span class="string"><font color="#0000ff">"STYLE1"</font></span><span>>特别提示: </span></span></li> <li class="alt"><span> 所属类别不能指定当前类别(即自己)为父类别 </span></li> <li class=""><span> 所属类别不能指定当前类别的子类别为父类别 </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"56%"</font></span><span> bgcolor=</span><span class="string"><font color="#0000ff">"#FFFFFF"</font></span><span>> </span></span></li> <li class=""><span><span class="string"><font color="#0000ff">"class"</font></span><span>> </span></span></li> <li class="alt"><span><span class="string"><font color="#0000ff">"0"</font></span><span>>做为主类别 </span></span></li> <li class=""><span><li class="alt"> <span></span><span class="vars"><font color="#dd0000">$query</font></span><span>=mysql_query(</span><span class="string"><font color="#0000ff">"select * from b_mtype order by rootid,orders"</font></span><span>); </span> </li></span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">while</font></strong></span><span>(</span><span class="vars"><font color="#dd0000">$arr</font></span><span>=mysql_fetch_array(</span><span class="vars"><font color="#dd0000">$query</font></span><span>)) </span> </li></span></li> <li class=""><span>{ ?> </span></li> <li class="alt"><span><span class="string"><font color="#0000ff">""</font></span><span> <span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$tn</font></span><span>[</span><span class="string"><font color="#0000ff">"parentid"</font></span><span>] == </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typeid"</font></span><span>]) { </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"selected"</font></span><span>; } ?>><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>]>0) {?> </span></span><li class=""><span><span class="keyword"><strong><font color="#006699">for</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$i</font></span><span>=1;</span><span class="vars"><font color="#dd0000">$i</font></span><span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"depth"</font></span><span>];</span><span class="vars"><font color="#dd0000">$i</font></span><span>++){ </span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"-"</font></span><span>;}?> </span></span><li class="alt"><span><span class="func">echo</span><span> </span><span class="vars"><font color="#dd0000">$arr</font></span><span>[</span><span class="string"><font color="#0000ff">"typename"</font></span><span>]?> </span></span></li> <li class=""><span><li class="alt"><span>} </span></li> <li class=""><span>?> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span><span class="string"><font color="#0000ff">"44%"</font></span><span> height=2</span></span></li></span></li></span></li></span></span></li> </ol>

Jenis PHP meminta untuk meningkatkan kualiti kod dan kebolehbacaan. 1) Petua Jenis Skalar: Oleh kerana Php7.0, jenis data asas dibenarkan untuk ditentukan dalam parameter fungsi, seperti INT, Float, dan lain -lain. 2) Return Type Prompt: Pastikan konsistensi jenis nilai pulangan fungsi. 3) Jenis Kesatuan Prompt: Oleh kerana Php8.0, pelbagai jenis dibenarkan untuk ditentukan dalam parameter fungsi atau nilai pulangan. 4) Prompt jenis yang boleh dibatalkan: membolehkan untuk memasukkan nilai null dan mengendalikan fungsi yang boleh mengembalikan nilai null.

Dalam PHP, gunakan kata kunci klon untuk membuat salinan objek dan menyesuaikan tingkah laku pengklonan melalui kaedah Magic \ _ _ _. 1. Gunakan kata kunci klon untuk membuat salinan cetek, mengkloning sifat objek tetapi bukan sifat objek. 2. Kaedah klon \ _ \ _ boleh menyalin objek bersarang untuk mengelakkan masalah menyalin cetek. 3. Beri perhatian untuk mengelakkan rujukan pekeliling dan masalah prestasi dalam pengklonan, dan mengoptimumkan operasi pengklonan untuk meningkatkan kecekapan.

PHP sesuai untuk pembangunan web dan sistem pengurusan kandungan, dan Python sesuai untuk sains data, pembelajaran mesin dan skrip automasi. 1.PHP berfungsi dengan baik dalam membina laman web dan aplikasi yang cepat dan berskala dan biasanya digunakan dalam CMS seperti WordPress. 2. Python telah melakukan yang luar biasa dalam bidang sains data dan pembelajaran mesin, dengan perpustakaan yang kaya seperti numpy dan tensorflow.

Pemain utama dalam tajuk cache HTTP termasuk kawalan cache, ETAG, dan modifikasi terakhir. 1.Cache-Control digunakan untuk mengawal dasar caching. Contoh: Cache-Control: Max-Age = 3600, Awam. 2. ETAG mengesahkan perubahan sumber melalui pengenal unik, Contoh: ETAG: "686897696A7C876B7E". 3. Modified Last Menunjukkan Masa Pengubahsuaian Terakhir Sumber, Contoh: Modified Last: Wed, 21OCT201507: 28: 00GMT.

Dalam php, kata laluan_hash dan kata laluan 1) password_hash menjana hash yang mengandungi nilai garam untuk meningkatkan keselamatan. 2) Kata Laluan_verify Sahkan kata laluan dan pastikan keselamatan dengan membandingkan nilai hash. 3) MD5 dan SHA1 terdedah dan kekurangan nilai garam, dan tidak sesuai untuk keselamatan kata laluan moden.

PHP adalah bahasa skrip sisi pelayan yang digunakan untuk pembangunan web dinamik dan aplikasi sisi pelayan. 1.Php adalah bahasa yang ditafsirkan yang tidak memerlukan kompilasi dan sesuai untuk perkembangan pesat. 2. Kod PHP tertanam dalam HTML, menjadikannya mudah untuk membangunkan laman web. 3. PHP memproses logik sisi pelayan, menghasilkan output HTML, dan menyokong interaksi pengguna dan pemprosesan data. 4. PHP boleh berinteraksi dengan pangkalan data, penyerahan borang proses, dan melaksanakan tugas-tugas sampingan pelayan.

PHP telah membentuk rangkaian sejak beberapa dekad yang lalu dan akan terus memainkan peranan penting dalam pembangunan web. 1) PHP berasal pada tahun 1994 dan telah menjadi pilihan pertama bagi pemaju kerana kemudahan penggunaannya dan integrasi lancar dengan MySQL. 2) Fungsi terasnya termasuk menghasilkan kandungan dinamik dan mengintegrasikan dengan pangkalan data, yang membolehkan laman web dikemas kini secara real time dan dipaparkan secara peribadi. 3) Aplikasi dan ekosistem PHP yang luas telah mendorong kesan jangka panjangnya, tetapi ia juga menghadapi kemas kini versi dan cabaran keselamatan. 4) Penambahbaikan prestasi dalam beberapa tahun kebelakangan ini, seperti pembebasan Php7, membolehkannya bersaing dengan bahasa moden. 5) Pada masa akan datang, PHP perlu menangani cabaran baru seperti kontena dan microservices, tetapi fleksibiliti dan komuniti aktif menjadikannya boleh disesuaikan.

Manfaat utama PHP termasuk kemudahan pembelajaran, sokongan pembangunan web yang kukuh, perpustakaan dan kerangka yang kaya, prestasi tinggi dan skalabilitas, keserasian silang platform, dan keberkesanan kos. 1) mudah dipelajari dan digunakan, sesuai untuk pemula; 2) integrasi yang baik dengan pelayan web dan menyokong pelbagai pangkalan data; 3) mempunyai rangka kerja yang kuat seperti Laravel; 4) Prestasi tinggi dapat dicapai melalui pengoptimuman; 5) menyokong pelbagai sistem operasi; 6) Sumber terbuka untuk mengurangkan kos pembangunan.


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