Can i send variable in php to anoter page?

This is my code but it doesn't work (error 500)

while ($dbarr = mysqli_fetch_array($result))    
{
    echo $dbarr['qno']; 
    echo '<a href=show_detail.php?item=' . $dbarr[qno] . '>' . $dbarr[ans] . '</a>';
    
    echo $dbarr['qname'],"</a>&nbsp;";      
    echo $dbarr['qcount'] . "<br>\n";   

}

from Recent Questions - Stack Overflow https://ift.tt/3yHn78w
https://ift.tt/eA8V8J