$info=mysql_fetch_array($sql); 出错
这是源码
<?php
session_start();
$A_name=$_POST[name];
$A_pwd=$_POST[pwd];
class chkinput{
var $name;
var $pwd;
function chkinput($x,$y){
$this->name=$x;
$this->pwd=$y;
}
function checkinput(){
include("conn/conn.php");
$sql=mysql_query("select * from tb_manager where name='".$this->name."' and pwd='".$this->pwd."'",$conn);
$info=mysql_fetch_array($sql);
if($info==false){
echo "<script language='javascript'>alert('用户名或密码不正确!');history.back();</script>";
exit;
}
else{
echo "<script>alert('登录成功!');window.location='index.php';</script>";
$_SESSION[admin_name]=$info[name];
$_SESSION[pwd]=$info[pwd];
}
}
}
$obj=new chkinput(trim($name),trim($pwd));
$obj->checkinput();
?>
报错:PHP Warning: mysql_fetch_array() expects parameter 1 to be resource