时间：2021-07-01 10:21:17 帮助过：20人阅读
mysql_connect();
//测试数据
$sql =<<< SQL
select * from (
select '1' as id, '0' as pid, 'Food' as title
union all select '2', '1', 'Fruit'
union all select '3', '2', 'Red'
union all select '4', '3', 'Cherry'
union all select '5', '2', 'Yellow'
union all select '6', '5', 'Banana'
union all select '7', '1', 'Meat'
union all select '8', '7', 'Beef'
union all select '9', '7', 'Pork'
) t
order by pid, id
SQL;
$rs = mysql_query($sql);
$res = array(); //结果数组
$ind = array(); //索引数组
while($row = mysql_fetch_assoc($rs)) {
list($id, $pid) = array_values($row);
$ind[$id] = $row;
if(isset($ind[$pid])) $ind[$pid]['child'][$id] =& $ind[$id]; //构造索引
if($pid == 0) $res[$id] =& $ind[$id]; //转存根节点组
}
echo '' . print_r($res, 1);<br /> </pre>Array<br /> (<br /> [1] => Array<br /> (<br /> [id] => 1<br /> [pid] => 0<br /> [title] => Food<br /> [child] => Array<br /> (<br /> [2] => Array<br /> (<br /> [id] => 2<br /> [pid] => 1<br /> [title] => Fruit<br /> [child] => Array<br /> (<br /> [3] => Array<br /> ( </div> <div class=""> <ul class="m-news-opt fix"> <li class="opt-item"> <a href='/PHPjiqiao-119340.html' target='_blank'><p>< 上一篇</p><p class="ellipsis">求正则表达式:只保留字符串中的汉字跟字母</p></a> </li> <li class="opt-item ta-r"> <a href='/PHPjiqiao-119342.html' target='_blank'><p>下一篇 ></p><p class="ellipsis">谋生成新数组好的办法</p></a> </li> </ul> </div> </div> </div> <div class="g-title fix"> <h2 class="title-txt">人气教程排行</h2> </div> <div class="m-rank u-dashed mb40"> <ul> <li class="rank-item"> <a href="/PHPjiqiao-379253.html" title='php如何获取跳转前的url' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num top">1</span> php如何获取跳转前的url </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-379019.html" title='php格林威治时间转换成当前时间的方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num second">2</span> php格林威治时间转换成当前时间的方法 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-366629.html" title='为什么php不能做大型系统？' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num third">3</span> 为什么php不能做大型系统？ </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-207623.html" title='range函数怎么用' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">4</span> range函数怎么用 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-162433.html" title='php中计算页面加载时间几种方法总结_PHP教程' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">5</span> php中计算页面加载时间几种方法总结_PHP教程 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-140221.html" title='求帮助，关于paypal支付返回值修改订单状态' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">6</span> 求帮助，关于paypal支付返回值修改订单状态 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-103588.html" title='typecho怎么配置文章内容页?' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">7</span> typecho怎么配置文章内容页? </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-99213.html" title='PhpStorm左侧structure不显示文件的方法列表是这么回事？' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">8</span> PhpStorm左侧structure不显示文件的方法列表是这么回事？ </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-92208.html" title='查看PHP的环境变量_PHP' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">9</span> 查看PHP的环境变量_PHP </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-170.html" title='PHP Primary script unknown 解决方法总结' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">10</span> PHP Primary script unknown 解决方法总结 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-148.html" title='php的命名空间与自动加载实现方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">11</span> php的命名空间与自动加载实现方法 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-133.html" title='解决laravel 出现ajax请求419(unknown status)的问题' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">174次</span> <span class="g-sort-num ">12</span> 解决laravel 出现ajax请求419(unknown status)的问题 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-462817.html" title='php 如何删除mysql记录' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">13</span> php 如何删除mysql记录 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-388448.html" title='PHP如何替换数组中的指定元素' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">14</span> PHP如何替换数组中的指定元素 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-124270.html" title='怎么去除字符串中非汉字、非字母、非数字的字符' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">15</span> 怎么去除字符串中非汉字、非字母、非数字的字符 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-112291.html" title='mysql如何一次执行多条SQL语句' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">16</span> mysql如何一次执行多条SQL语句 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-110669.html" title='修改header里面的Connection为close解决方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">17</span> 修改header里面的Connection为close解决方法 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-153.html" title='PHP基于session.upload_progress 实现文件上传进度显示功能详解' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">18</span> PHP基于session.upload_progress 实现文件上传进度显示功能详解 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-125.html" title='php5.6.x到php7.0.x特性小结' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">173次</span> <span class="g-sort-num ">19</span> php5.6.x到php7.0.x特性小结 </a> </li> <li class="rank-item"> <a href="/PHPjiqiao-378118.html" title='php为什么会出现504错误' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">172次</span> <span class="g-sort-num ">20</span> php为什么会出现504错误 </a> </li> </ul> </div> </div> </div> <!-- / 教程内容页 --> </div> </div> <!-- 页尾 --> <div class="footer"> 本站所有资源全部来源于网络，若本站发布的内容侵害到您的隐私或者利益，请联系我们删除！</div> <!-- / 页尾 --> <script type="text/javascript" src="/kan/js/read.js"></script> <div style="display:none"> <div class="login-box" id="login-dialog"> <div class="login-top"><a class="current" rel="nofollow" id="login1" onclick="setTab('login',1,2);" >登录</a></div> <div class="login-form" id="nav-signin"> <!-- <div class="login-ico"><a rel="nofollow" class="qq" id="qqlogin" target="_blank" href="/user-center-qqlogin.html"> QQ </a></div> --> <div class="login-box-form" id="con_login_1"> <form id="loginform" action="/user-center-login.html" method="post" onsubmit="return false;"> <p class="int-text"> <input class="email" id="username" name="username" type="text" value="用户名或Email" onfocus="if(this.value=='用户名或Email'){this.value='';}" onblur="if(this.value==''){this.value='用户名或Email';};" ></p> <p class="int-text"> <input class="password1" type="password" id="password" name="password" value="******" onBlur="if(this.value=='') this.value='******';" onFocus="if(this.value=='******') this.value='';" > </p> <p class="int-info"> <label class="ui-label"> </label> <label for="agreement" class="ui-label-checkbox"> <input type="checkbox" value="" name="cookietime" id="cookietime" checked="checked" value="2592000"> <input type="hidden" name="notforward" id="notforward" value="1"> <input type="hidden" name="dosubmit" id="dosubmit" value="1">记住我的登录 </label> <a rel="nofollow" class="aright" href="/user-center-forgetpwd.html" target="_blank"> 忘记密码？ </a></p> <p class="int-btn"><a rel="nofollow" id="loginbt" class="loginbtn"><span>登录</span></a></p> </form> </div> <form id="regform" action="/user-center-reg.html" method="post"> <div class="login-reg" style="display: none;" id="con_login_2"> <input type="hidden" name="t" id="t"/> <p class="int-text"> <input id="email" name="email" type="text" value="Email" onfocus="if(this.value=='Email'){this.value='';}" onblur="if(this.value==''){this.value='Email';};"></p> <p class="int-text"> <input id="uname" name="username" type="text" value="用户名或昵称" onfocus="if(this.value=='用户名或昵称'){this.value='';}" onblur="if(this.value==''){this.value='用户名或昵称';};"></p> <p class="int-text"> <input type="password" id="pwd" name="password" value="******" onBlur="if(this.value=='') this.value='******';" onFocus="if(this.value=='******') this.value='';"> </p> <p class="int-text1"><span class="inputbox"> <input id="validate" name="validate" type="text" value="验证码" onfocus="if(this.value=='验证码'){this.value='';}" onblur="if(this.value==''){this.value='验证码';};"> </span><span class="yzm-img"><img src="/user-checkcode-index" alt="看不清楚换一张" id="indexlogin"></p> <p class="int-info"> <label> <input value="" name="agreement" id="agreement" CHECKED="checked" type="checkbox"> 我已阅读<a rel="nofollow" href="/user-center-agreement.html">用户协议</a>及<a rel="nofollow" href="/user-center-agreement.html">版权声明</a></label> </p> <p class="int-btn"><input type="hidden" name="dosubmit"/> <a rel="nofollow" class="loginbtn" id="register"><span>注册</span></a></p> </div> </form> </div> </div> </div> </div> <script type="text/javascript" src="/kan/js/foot_js.js"></script> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?6dc1c3c5281cf70f49bc0bc860ec24f2"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script> <script type="text/javascript" src="/layui/layui.js"></script> <script> layui.use('code', function() { layui.code({ elem: 'pre', //默认值为.layui-code about: false, skin: 'notepad', title: 'php怎么实现数据库验证跳转代码块', encode: true //是否转义html标签。默认不开启 }); }); </script> </body> </html>