登录功能报错

Question

Fatal error:  Call to undefined function mysql_num_row() in E:\phpStudy\WWW30\daima\login_a.php on line 33

if(mysql_num_row($result)==0){

说是这一句，下面是完整代码

session_start() ;

$username=$_POST["用户名"];

$password=$_POST["密码"];

include("config.php");

if(empty($username)){

echo ("");

}

if(empty($password)){

echo ("<脚本类型= 'text/javascript'>alert('密码不能为空的');history.go(-1);");

}

##//echo $用户名.$密码;

$db=mysql_connect("127.0.0.1","root","root");

mysql_select_db("性能",$db);

mysql_query("设置名称'GB2312'");

$_POST["用户名"];

##$sql="select * from admin where admin_name='$username' and admin_pw='$password'";

$result=mysql_query($sql);

//$number = mysql_fetch_row($result);

//$result=mysql_fetch_array(mysql_query($sql));

if(mysql_num_row($result)== 0){

echo("<脚本类型='text/javascript'>alert('用户名或密码不正确！');history.go(-1);</script> ");

mysql_close();

退出;

}else{

$_SESSION["admin"]= "lee";

echo "<script>location.href='Admin.html';</script>";

}

?>

Answer 1

print_r(get_extension_funcs('mysqli')); 

是mysqli_num_rows(),函数名称写错了.细心点哦~