


Create unlimited hierarchical classes in PHP (complete code and comments)_PHP tutorial
The following provides an infinite grading class code in PHP. Friends who want to implement unlimited grading classes can try it. The bug has been checked and corrected. If you copy the code directly, you can use angle brackets and need to be replaced).
1. There is a b_mtype table in the database ProductShow. The table creation statement is as follows:
<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 code: just copy it directly)
<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">//Ignore all warning messages </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">//Embedded connection file</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> "add"</span></li> <li class=""> <span>: </span><span class="keyword"><strong><font color="#006699"> </font></strong>echo</span><span> add(); </span><span class="string"><font color="#0000ff"></font> </span><span></span>break</li> <li class="alt"> <span></span><span class="func">; > </span><span></span>case</li> <li class=""> <span></span><span class="keyword"> <strong><font color="#006699"></font>"edit"</strong></span><span>: </span> </li> <li class="alt"><span> </span></li> <li class="">echo<span></span> edit(); <span class="keyword"><strong><font color="#006699"></font> </strong></span><span></span>break<span class="string"><font color="#0000ff"></font></span>; <span></span> </li> <li class="alt"> <span></span><span class="func"> 🎜></span><span></span> </li> <li class=""> <span>"saveadd"</span><span class="keyword"><strong>: <font color="#006699"></font></strong></span> <span></span>echo</li> <li class="alt"> saveadd(); <span></span> </li> <li class=""> <span> </span><span class="keyword"><strong> 🎜><font color="#006699">"saveedit"</font></strong></span>: <span></span><span class="string"><font color="#0000ff"> </font></span>echo<span></span> saveedit(); </li> <li class="alt"> <span></span> <span class="func"></span><span></span>break</li> <li class=""> <span></span>; <span class="keyword"><strong><font color="#006699"></font> </strong> </span><span> </span> </li> <li class="alt"><span>case</span></li> <li class=""> <span></span> <span class="keyword"><strong><font color="#006699">"del"</font></strong></span>: <span></span><span class="string"><font color="#0000ff"> </font></span>echo<span></span> del(); </li> <li class="alt"> <span></span> <span class="func"></span> <span></span>break</li> <li class=""> <span></span>; <span class="keyword"><strong><font color="#006699"></font> </strong>default</span><span></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>>Product Category Settings <span class="string"><font color="#0000ff">"?ToDo=add"</font></span><span>>Add a new category </span></span><li class=""> <span> lt; table width=</span> </li> <li class="alt"><span>"100%"</span></li> <li class=""><span> bgcolor=</span></li> <li class="alt"> <span>"#cccccc"</span><span class="string"><font color="#0000ff"> cellspacing=</font></span><span>"1"</span><span class="string"><font color="#0000ff"> cellpadding=</font></span><span>"3"</span><span class="string"><font color="#0000ff">> </font></span><span> </span> & lt; trbgcolor = <span class="string"> <font color="#0000ff"> </font> "#F9F9F9" </span> <span> </span> & gt; </li></span> <li class=""> <span> </span> & lt; td width = <span class="string"><font color="#0000ff"></font>"6%"</span><span></span> height=</li></span><li class="alt"> <span>"21"</span><span class="string"><font color="#0000ff">>ID</font></span><span></span> 🎜><span class="string"><font color="#0000ff"></font> 🎜></span><span> </span> 🎜> $query</li></span></li> <li class=""> <span>=mysql_query(</span><span class="string"><font color="#0000ff">"select * from b_mtype order by rootid,orders"</font></span><span>); </span> </li></span></li> <li class="alt"> <span> </span><span class="string"><font color="#0000ff"></font>while</span><span></span>(</li> <li class=""> <span></span>$arr<span class="string"><font color="#0000ff"> </font>=mysql_fetch_array(</span><span></span>$query</li> <li class="alt"><span>)) </span></li> <li class=""> <span></span> { </li> <li class="alt"> <span></span> </li> <li class=""> <span></span> ?> <span class="vars"><font color="#dd0000"></font> 🎜>"# FFFFFF"</span><span></span>><font color="#0000ff">echo</font> <span></span>$arr</li> <li class="alt"> <span></span> [<span class="keyword"><strong><font color="#006699">"typeid"</font></strong></span>];?> <span></span><span class="vars"><font color="#dd0000"> color 🎜></font></span>"#FFFFFF"<span></span><span class="vars">></span><span>if</span> </li> <li class=""><span> (</span></li> <li class="alt"><span>$arr</span></li> <li class=""><span>[</span></li> <li class="alt"><span>"depth"</span></li> <li class=""> <span>]>0) { </span><span class="string"><font color="#0000ff"></font> </span><span></span><span class="func">for</span><span></span><span>(</span><span class="vars"><font color="#dd0000">$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> <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> <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> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="comment"><font color="#008200">//echo $btype; </font></span><span> </span> </li> <li class="alt"><span> </span></li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$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">$tn</font></span><span>==</span><span class="string"><font color="#0000ff">""</font></span><span>) </span> </li> <li class="alt"><span>{ </span></li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"alert('参数有误,请重新填写.!');"</font></span><span>; </span> </li> <li class=""> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">"location.href='?';"</font></span><span>; </span> </li> <li class="alt"> <span></span><span class="func">echo</span><span> </span><span class="string"><font color="#0000ff">""</font></span><span>; </span> </li> <li class=""> <span></span><span class="keyword"><strong><font color="#006699">die</font></strong></span><span>(); </span> </li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"> <span></span><span class="keyword"><strong><font color="#006699">if</font></strong></span><span> (</span><span class="vars"><font color="#dd0000">$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">//Insert category </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">//For debugging 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> $depth</span><span class="keyword"><strong>>0) <font color="#006699"></font></strong></span> { <span></span><span class="vars"> When the classification depth is greater than 0, the number of pages and related sorting of its parent category (or the parent category’s parent category) must be updated <font color="#dd0000"></font></span> <span></span> </li> <li class="alt"> ><span></span>for</li> <li class=""> <span></span><span class="comment"> (<font color="#008200"></font></span>$i<span></span>=1;</li> <li class="alt"> <span> </span>$i<span class="keyword"><strong><font color="#006699"></font></strong></span>$depth<span></span><span class="vars">;<font color="#dd0000"></font></span>$i<span></span><span class="vars">++){ <font color="#dd0000"></font></span><span> </span><span class="vars"><font color="#dd0000"></font> </span><span></span><span class="vars">if<font color="#dd0000"></font></span><span> (</span> </li> <li class="">$parentid<span></span><span class="comment">!=<font color="#008200"></font></span>""<span></span>){ </li> <li class="alt"> <span></span><span class="keyword"> <strong>$query<font color="#006699"></font></strong>=mysql_query(</span><span></span>"update b_mtype set child=child+1 where typeid='$parentid'"<span class="vars"><font color="#dd0000"></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"></font>$result</span><span></span>=mysql_query(<span class="string"><font color="#0000ff"></font> "select parentid from b_mtype where typeid='$parentid'"</span><span></span>); </li> <li class="alt"> <span></span> </li> <li class=""> <span>=mysql_fetch_array(</span><span class="comment"><font color="#008200">$result</font></span><span>); </span> </li> <li class="alt"> <span> </span><span class="vars"><font color="#dd0000"> </font></span><span></span>if<span class="string"><font color="#0000ff"></font></span> (<span></span>$par</li> <li class=""> <span></span>[<span class="vars"><font color="#dd0000"></font>'parentid'</span><span></span>]!=<span class="vars"><font color="#dd0000"></font>""</span><span></span>){ </li> <li class="alt"> <span></span> </li> <li class=""> <span></span>$parentid<span class="keyword"><strong><font color="#006699">=</font></strong></span>$par<span></span><span class="vars">[<font color="#dd0000"></font></span>'parentid'<span></span><span class="string">]; <font color="#0000ff"></font></span><span> </span> </li> <li class="alt"> <span> </span><span class="comment"><font color="#008200">//When the number of loops is greater than 1 and the last loop is run, update directly </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='$parentid'"</font></span><span>); </span> </li> <li class=""><span> </span></li> <li class="alt"> <span>//Update the page sorting and the page sorting number that is larger than this need and under this category </span><span class="comment"><font color="#008200"> </font></span><span></span> </li> <li class=""> <span>$query</span><span class="comment"><font color="#008200">=mysql_query(</font></span><span>"update b_mtype set orders=orders+1 where rootid='$rootid' and orders> ;'$orders'"</span> </li> <li class="alt">); <span></span><span class="vars"><font color="#dd0000"> ></font></span> <span></span><span class="string"><font color="#0000ff"> ></font></span><span> orders'+1 where typeid='$ntid'"</span> </li> <li class="">); <span></span><span class="comment"><font color="#008200"> ></font></span>else<span></span> </li> <li class="alt">{ <span></span><span class="comment">//corresponds to if ($depth>0), when the depth of the upper-level classification is 0, just Just update the number of upper-level category pages and the sorting number of the page <font color="#008200"></font></span> <span></span> </li> <li class=""> <span></span><span class="vars">$query<font color="#dd0000"></font> </span>=mysql_query(<span></span><span class="string">"update b_mtype set child=child+1 where typeid='$btype'"<font color="#0000ff"></font></span>); <span></span> </li> <li class="alt"> <span></span> </li> <li class="">$result<span></span><span class="keyword">=mysql_query(<strong><font color="#006699"></font>"select max(orders) from b_mtype where typeid='$ ntid'"</strong></span><span>); </span><span class="comment"><font color="#008200"></font> 🎜></span><span>$result</span> </li> <li class="alt">); <span></span><span class="vars"><font color="#dd0000"> </font>=mysql_query(</span><span></span>"update b_mtype set orders='$ord[0]'+1 where typeid='$ntid'"<span class="string"><font color="#0000ff"></font>); </span><span></span> } </li> <li class=""> <span></span> <span class="vars"><font color="#dd0000"></font>}</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>; Category added successfully!');"</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>

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.

HTTPS significantly improves the security of sessions by encrypting data transmission, preventing man-in-the-middle attacks and providing authentication. 1) Encrypted data transmission: HTTPS uses SSL/TLS protocol to encrypt data to ensure that the data is not stolen or tampered during transmission. 2) Prevent man-in-the-middle attacks: Through the SSL/TLS handshake process, the client verifies the server certificate to ensure the connection legitimacy. 3) Provide authentication: HTTPS ensures that the connection is a legitimate server and protects data integrity and confidentiality.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.


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