Beginner's php/mysql connection probs

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 Dear group,

(I am a very beginner so please bear with me for a simple question)

  I am a self thought php beginner. I wrote my first toy 
code for database connection in php/mysql. The connection
is successful but iam getting a warning and my rows/columns
are not showing. I am getting a warning:

Warning:  mysqli_fetch_row() expects parameter 1 to be mysqli_result, 
boolean given in c:\webs\test\dbs\one.php on line 13

I went through the php manual for the above mentioned function where
I get no clue. Pls guide me.

code:

<html>
  <head>
     <title> my first data base page </title>
  </head>
 <body>
   <pre>
 <?php
    $conn = mysqli_connect("localhost","root","passwd","temp")
            or die("conn failed");
    $temp1 = "select *from grape_varity"; 
    $result = mysqli_query($conn,$temp);

    while($row=mysqli_fetch_row($result))
    {
      for($i =0;$i < mysqli_num_fields($result);$i++)
        echo $row[i]." ";
        echo "\n";
    }
       
     mysqli_close($conn);

 ?>
</pre>
</body>
</html>

[OT]
And one more thing is if I want to replay to a msg in this mail list
do I have to hit replay button or replay-all button for posting
in the mail list. I use "microsoft outlook 2000"

[/OT]

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