mysql - Pass a dynamic variable through URL php -

i'm not sure title, tried best. have table displayed information database using file

display.php

<?php      mysql_connect("localhost", "root", "root") or die(mysql_error());     mysql_select_db("tournaments") or die(mysql_error());      $result = mysql_query("select * tournies")      or die(mysql_error());        echo '<table id="bets" class="tablesorter" cellspacing="0" summary="datapass"> <thead>     <tr>         <th>tournament <br> name</th>          <th>pot</th>          <th>maximum <br> players</th>          <th>minimum <br> players</th>          <th>host</th>          <th></th>         <th></th>     </tr> </thead> <tbody>';        while($row = mysql_fetch_array( $result )) {         $i=0; if( $i % 2 == 0 ) {             $class = "";         } else {             $class = "";         }          echo "<tr" . $class . "><td>";          echo $row['tour_name'];         $tour_id = $row['tour_name'];         echo "</td><td>";          echo $row['pot']," tokens";         echo "</td><td class=\"br\">";          echo $row['max_players']," players";         echo "</td><td class=\"br\">";          echo $row['min_players']," players";         echo "</td><td class=\"br\">";         echo $row['host'];         echo "</td><td>";         echo "<input id=\"delete_button\" type=\"button\" value=\"delete row\" onclick=\"somedeleterowfunction(this)\">";         echo "</td><td>";         echo "<form action=\"join.php?name=$name\" method=\"post\" >";         echo "<input id=\"join_button\" type=\"submit\" value=\"join\">";         echo "</td></tr>";      }       echo "</tbody></table>"; ?> 

basically want user press button row of table , go new page called join.php. need persons username , name of tournament row clicked.

for example here's page:

when click join button @ end of row 1 should send them

'join.php?name=thierusernamehere&tourname=dfgdds'

any appreciated. thanks.

echo '<td><a href="join.php?name='.$row['name'].'&tourname='.$row['tour_name'].'">join</a></td>'