[SOLVED] Nav-Bar disappearing when ?id=18

[DeanWhitehouse]

when i click on a members ID the navigation bar dissapears, the URL goes from members.php to members.php?id=18

this is my code

<?php
require_once 'includes/header.php';
require_once 'includes/db_connect.php';
?><div class="bg"></div>
<div class="clock"><?php echo gmdate('l, jS F Y');?> <span id="txt"></span></div> 
<div class="member">
<?php
if ($_SESSION['is_valid'] == true){
if (isset($_GET['id'])) {
if ((int) $_GET['id'] > 0) {
$userid = $_GET['id'];
$sql = "SELECT * FROM $user WHERE `user_id`='{$userid}' LIMIT 0,1;";
$result = mysql_query($sql);
$row = mysql_fetch_assoc($result);
$userprofname = $row['user_name'];
$profemail = $row['user_email'];
echo "$userprofname<br>";
$show_email = $row['show_email'];
if (mysql_num_rows($result) < 1) {
     echo 'This ID does not exist in the database';
 exit();
}
if ($show_email == 1)
{ 
echo 'Email:<a href="mailto:'.$profemail.'">    Email Me</a>';
}
elseif ($show_email == 0)
{
echo "Email:   Hidden";
}
exit();
}
else {
echo "Unknown User ID! <br />";
echo "<a href=\"members.php\">Return to Members Page</a>";
exit();
}
}
//No ID passed to page, display user list:
$query = "SELECT user_id, user_name FROM $user";
$result = mysql_query($query) or die("Error:" . mysql_error());
if (mysql_num_rows($result) > 0) {
echo "User List:<br />";
while ($row = mysql_fetch_assoc($result)) {
  echo '<a href="?id=' . $row['user_id'] . '">' . $row['user_name'] . '</a><br />';
}
}
}
else
{
echo "Please login to view this page.";
}
?>
</div>
<?php
mysql_close();
require_once 'nav_bar.php';
require_once 'includes/footer.php';
?>

[DyslexicDog]

You say only part of your webpage doesn't show up. The content you do have is there information before and after it that still shows up?

[DeanWhitehouse]

on, members.php, everything that should show does, but on members.php?id=19, only the requires above the code are shown

[BlueSkyIS]

you've got a couple exit()s in there. it may be exiting before it gets to the bottom.

[DeanWhitehouse]

i managed to find a way around it, thanks for the replys