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
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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:
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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。