PHP - Get Data From Other Webpage

Hi,

I have a webpage that the super administrator log's into. Once the super administrator is logged in he/she can view his/her clients. The super admins clients also have their own clients, once the super admins clients login they can view their own clients details who register with them. What i am trying to do is have a link on that clients name (for the super admins clients) that will bring me to a new page where i can edit his/her details that is stored in the mysql database. I have used INPUT buttons for each clients row in a FORM which works......but i know this is not the right way to do it. This is the code i have used to display the clients with the input button:
<?php
$query = "SELECT ID FROM clients WHERE username = '$username'";
$result = mysql_query($query);
if(mysql_num_rows($result))
{
while($row = mysql_fetch_assoc($result)){
$userID = $row['ID'];
$query = "SELECT * FROM users WHERE userID = '$userID'";
$result = mysql_query($query);
$num=mysql_numrows($result);
mysql_close();
?>
<table border="0" cellspacing="3" cellpadding="3" width="100%">
<tr>
<th width="30%"><font face="Arial, Helvetica, sans-serif">Name</font></th>
<th><font face="Arial, Helvetica, sans-serif">Username</font></th>
<th><font face="Arial, Helvetica, sans-serif">Email Address</font></th>
<th>&nbsp;</th>
</tr>
<?php
$i=0;
while ($i < $num) {
$userID=mysql_result($result,$i,"userID");
$name=mysql_result($result,$i,"name");
$username=mysql_result($result,$i,"username");
$email=mysql_result($result,$i,"email");

?>
<tr>
<td width="30%"><?php echo $name; ?></td>
<td><?php echo $username; ?></td>
<td><?php echo $email; ?></td>
<td><form action="http://localhost/single-client.php?userID=<?php echo $userID; ?>&name=<?php echo $name; ?>" method="post" style="margin:0px;">
<input type="hidden" name="selectuser" id="selectuser" value="<?php echo $userID; ?>" /><input type="hidden" name="username1" id="username1" value="<?php echo $username; ?>" /><input type="hidden" name="name1" id="name1" value="<?php echo $name; ?>" /><input type="submit" name="submit" value="View Info" class="button" /></form></td>
</tr>
<?php
$i++;
}}}
?>
</table>

From the above code when i use the following code:
?userID=<?php echo $userID; ?>&name=<?php echo $name; ?>
It doesn't make a difference .... it just displays the correct userID and name in the link.

Once the INPUT button is clicked it will bring you to this page:
<?php
$query = "SELECT * FROM users WHERE userID = '".$_POST['selectuser']."' AND username = '".$_POST['username1']."'";
$result = mysql_query($query);
if(mysql_num_rows($result))
{
$userID = $_POST['selectuser'];
while($row = mysql_fetch_assoc($result)){
$name = $row['name'];
$userID = $row['userID'];
$email = $row['email'];
$username = $row['username'];
$registered = $row['registered'];
$last = $row['last'];
?>
<?php echo $brokerID; ?>
<table border="0" cellspacing="3" cellpadding="3" width="100%" summary="Client table">
<tr>
<td><form action="http://localhost/single-client.php?userID=<?php echo $userID; ?>&name=<?php echo $name; ?>" method="post" style="margin:0px;">
<input type="hidden" name="selectuser" id="selectuser" value="<?php echo $userID; ?>" /><input type="hidden" name="username1" id="username1" value="<?php echo $username; ?>" /><input type="hidden" name="name1" id="name1" value="<?php echo $name; ?>" /><input type="submit" name="submit" value="Income" class="button" /></form></td>
<td><form action="http://localhost/single-client.php?userID=<?php echo $userID; ?>&amp;name=<?php echo $name; ?>" method="post" style="margin:0px;">
<input type="hidden" name="selectuser" id="selectuser" value="<?php echo $userID; ?>" /><input type="hidden" name="username1" id="username1" value="<?php echo $username; ?>" /><input type="hidden" name="name1" id="name1" value="<?php echo $name; ?>" /><input type="submit" name="submit" value="Bills" class="button" /></form></td>
</tr>
</table>
<h2>Client Profile - <?php echo $_POST['name1']; ?></h2>
<table border="0" cellspacing="3" cellpadding="3" width="100%">
<tr>
<th><font face="Arial, Helvetica, sans-serif">Name</font></th>
<th><font face="Arial, Helvetica, sans-serif">Username</font></th>
<th><font face="Arial, Helvetica, sans-serif">Email Address</font></th>
<th><font face="Arial, Helvetica, sans-serif">Registered</font></th>
<th><font face="Arial, Helvetica, sans-serif">Last</font></th>
</tr>
<tr>
<td><?php echo $name; ?></td>
<td><?php echo $username; ?></td>
<td><?php echo $email; ?></td>
<td><?php echo $registered; ?></td>
<td><?php echo $last; ?></td>
</tr>
</table>
<?php
}
}
else
{
   echo "<p>Error</p>";
}
?>

This page displays the correct user info. Is there a way to do it differently instead of using FORMS and INPUT buttons? and rather using links? Any help would be greatly appreciated.

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