How can I make a <a href link for data output by php and mysql?

Hi,

I have two questions here, so would appreciate some help from anyone who is good at using PHP!

I have the code below on the browse users page and I'm not sure of the syntax to use to get the userid to be a link so the user can click on it to go to that users profile:

$query = "SELECT * FROM plus_signup";

$result = mysql_query($query) or die(mysql_error());

while($row = mysql_fetch_array($result)){
echo "a href=. view_profile.php? =$row['userid']. ">$row->userid ". $row['name'];
echo "";