how to solve Warning: mysql_num_rows() expects parameter 1 to be resource

[Bhutan123]

    <?php 
        if(isset($_POST['submit']))
        {
            $regNumber=trim($_POST['txtReg']);
 
            $qry="SELECT * FROM tblscore WHERE Registration_Number='$regNumber'";
            $run=mysql_query($qry,$connection)or die("Database Error");
 
 
            if(mysql_num_rows($qry)<1) 
            {
 
            echo "<script> alert('No matches found');</script>";
            }
 
            while($row=mysql_fetch_array($run))
            {
                $regustrationNo=$row[1];
                $Viva=$row[2];
                $degree=$row[3];
                $written=$row[4];
                $Total=$row[5];
 
                ?>
 
            <table cellspacing="2px" cellpadding="10px" align="center" border="1px">
 
            <tr>
            <th>Registration Number </th>
            <th>Viva Marks</th>
            <th>Degree Marks</th>
            <th>written</th>
            <th>Total</th>
            </tr>
 
            <tr>
            <td><?php echo $regustrationNo;?></td>
            <td><?php echo $Viva;?></td>
            <td><?php echo $degree;?></td>
            <td><?php echo $written;?></td>
            <td><?php echo $Total;?></td>
            </tr>
 
    <?php } ?>
 
    <?php } ?>
 

[Luuk]

1) RTFM

2) Change line#10 to:

if(mysql_num_rows($run)<1) 
 

[oriola1]

i tinks whtz RTFM says shud solve d problems frm ur code am seeing.