本文实例讲述了PHP简单实现无限级分类的方法。分享给大家供大家参考,具体如下:
数据库结构:
CREATE TABLE IF NOT EXISTS `city` ( `id` int(11) NOT NULL auto_increment, `name` varchar(30) character set utf8 collate utf8_unicode_ci NOT NULL default '0', `parentId` int(11) NOT NULL default '0' PRIMARY KEY (`id`)) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=7 ;
php文件:
$db=new DB($Config['host'],$Config['user'],$Config['password'],$Config['port'],$Config['db'],$Config['charset']);function findCity($table,$id=0,$level=1){ global $db; $findSql="select id,name,parentId from $table where parentId={$id} order by id"; $findResult=$db->getArray($findSql); $num=$db->numRows; $logoStr="|"; for($i=0;$i<$level;$i++){ $logoStr.="--"; } if($num!=0){ for($j=0;$j<$num;$j++){ echo "<option value={$findResult[$j]['id']}>{$logoStr}{$findResult[$j][name]}</option>"; findCity($table,$findResult[$j]['id'],$level+1); } }}findCity(city);