php怎么样连接sql数据库?
<?php
$con=mysql_connect("localhost","root","1234");
mysql_select_db("tushu");
$quety="insert into library (name,author,id,classname,editdate) values('$name','$author','$id','$classname','$editdate')";
$result=mysql_query("$query",$con);
require("tushudis.php");
?>
我这样写加不进去数据啊,数据库已经建好.