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>' ;
}
}
}
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调用:
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category_tree(0) //先提取最顶层文章
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以上所述就是本文的全部内容了,希望大家能够喜欢。