Question

PHP + MySql 查询返回值的问题！

数据库名A，表名B，表里有N个字段，包括id(int) 这个字段，我只要查询并返回B表中字段id的最大值，要怎么实现呢？ PHP + MYSQL 的哦！哪位大大帮帮忙~！我是新手！

Answer 1

$conn=mysql_connect("localhost",'root','');
mysql_select_db('a',$conn);
$sql="select * from b order by id desc limit 1";
$result=mysql_query($sql,$conn);
$rs=mysql_fetch_array($result);
echo $rs['id'];

$rs['id']就是你要得最打得id值

Answer 2

mysql_connect("localhost","root","");
mysql_select_db("A");
mysql_query("set names 'gb2312'");
$result=mysql_query("select * from B order by id desc limit 0,1");
$array=mysql_fetch_assoc($result);
echo $array["id"];