[Scottish] php and my sql

[Ismail Murat Dilek]

Hi,
I ve created a mysql database. Basically user fills the form then hits submit button and all data posted to mysql database.This part works fine.
Next time user return the page enters their email address and hits submit button. my php script
check if email address exist in our database if exist takes user to download page, if not exist takes them to registration page.
Some strange reason this comparasing is not working properly. it works for some email addresses,
e.g. my email address [EMAIL PROTECTED] is registered in mysql database so script should take to download page but it is taking me registration page instead
any ideas
<?
//Author: Ismail Murat Dilek

require("conn.php");
/// ========================================================
// following part read values of entered details and prepares them for mysql data input format

$email = $HTTP_POST_VARS["email"];
///========================================================


$query ="Select email from details"; // selects email field from details table
$result = mysql_query($query); //executes sql select query
$num_result = mysql_num_rows($result);
/* searches database for email, if email dosent exist writes details to
database,then redirects user to download page
*/
for ($i=0; $i<$num_result; $i++)
{
$row= mysql_fetch_array($result);
$eml = stripslashes($row[email]);
$email = trim($email);
$eml = trim($eml);
$eq = strcmp($email,$eml);
if ($eq != 0)
{
header("Location:register.php");
}
else
{
header("Location:download.php");
}
}//end for

?>



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