PHP使用递归生成文章树,
PHP使用递归生成文章树,
因为自己的一个技术站,以文章为主,文章有些是一个系列的,所以想把这些文章归类,同一类的在一个下面。
数据库好设计,无非用id,fatherid来进行归类,fatherid代表父类是那篇文章的id,id是文章的唯一id,层次不限,可以是两层,可以是三层。fatherid为0的表示顶层文章。
php代码,主要是递归
function category_tree($fatherid){ //require_once("mysql_class/config.inc.php"); //require_once("mysql_class/Database.class.php"); $db = new Database(DB_SERVER, DB_USER, DB_PASS, DB_DATABASE); $db->connect(); $sql = "SELECT id,title,url FROM ".TABLE_TASK." WHERE fatherid=$fatherid and ispublic=1 order by id asc"; $articles = $db->query($sql); $db->close(); while ($record = $db->fetch_array($articles)){ $i = 0; if ($i == 0){ if($fatherid==0){ echo '<ul class="article-list-no-style border-bottom">'; }else{ echo '<ul class="article-list-no-style">'; } } if($fatherid==0){ echo '<li><span class="glyphicon glyphicon-log-in" aria-hidden="true" id="han'.$record['id'].'"> </span> <a href="'.$record['url'].'" target="_blank">' . $record['title'].'</a>'; }else{ echo '<li><span class="glyphicon glyphicon-chevron-right" aria-hidden="true"> </span> <a href="'.$record['url'].'" target="_blank">' . $record['title'].'</a>'; } category_tree($record['id']); echo '</li>'; $i++; if ($i > 0){ echo '</ul>'; } } }
调用:
category_tree(0) //先提取最顶层文章
以上所述就是本文的全部内容了,希望大家能够喜欢。

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