displaying user's records from database - php

Question

<?php
include "db.php";
$username=$_POST['username'];
$email=$_POST['email'];
$query="SELECT * FROM members where username = '".mysql_real_escape_string($username)."'";
$result=mysql_query($query)or die(mysql_error());
$user = mysql_fetch_assoc($result);
mysql_close();
?> <br /> <p></p>
Welcome back! Your details below: <br /><br />
<table border="1" cellspacing="2" cellpadding="5">
<tr>
<th>First Name</th>
<th>Last Name</th>
<th>User Name</th>
<th>Email</th>
<th>Age</th>
</tr>
<?php
$firstname= $user['firstname'];
$lastname= $user['lastname'];
$username= $user['username'];
$email= $user['email'];
$age= $user['age'];
?>
<tr>
<td><? echo $firstname ?></td>
<td><? echo $lastname ?></td>
<td><? echo $username ?></td>
<td><? echo $email ?></td>
<td><? echo $age ?></td>
</tr>
</table>
guys, i use this code to display the user's details, BUT STILL its not displaying the records.
what's wrong with this code? hmm... there's no error, but its not working.
:'(

Answer 1

Try adding an echo(mysql_error()) to see if there's a MySQL error beyond just a bad query.

Answer 2

Try adding a loop like this below replacing the single record set with multiple. Also check your query and see if it's correct.
<?php
include "db.php";
$username=$_POST['username'];
$email=$_POST['email'];
$query="SELECT * FROM members where username = '".mysql_real_escape_string($username)."'";
$result=mysql_query($query)or die(mysql_error());
//$user = mysql_fetch_assoc($result);
?>
<br /> <p></p>
Welcome back! Your details below: <br /><br />
<table border="1" cellspacing="2" cellpadding="5">
<tr>
<th>First Name</th>
<th>Last Name</th>
<th>User Name</th>
<th>Email</th>
<th>Age</th>
</tr>
<?php
while($user=mysql_fetch_array($result))
{
echo '<tr>';
echo '<td>'.$user['firstname'].'</td>
<td>'.$user['lastname'].'</td>
<td>'.$user['username'].'</td>
<td>'.$user['email'].'</td>
<td>'.$user['age'].'</td>';
echo '</tr>';
}
mysql_close();
?>
</table>

Answer 3

Put error_reporting(~0) at the very top to make sure you get reports on everything going less than perfect. Do a print_r($_POST) to make very sure you get in $_POST what you think you are getting.
If you then still haven't found the problem, provide more context! (like: script output)
(btw: you should echo htmlspecialchars($user[...]); or people can put very nasty stuff in there.)
And make sure you have "short_open_tag = On" in your php.ini, or use
<?php
instead of
<?
everywhere!