No trust me you're on the right track. You don't need the double ==
operator in the SQL query. Try something like this...
$query = SELECT * FROM membersWHERE username = '$username';
$result = mysql_query($query, $db);
if (mysql_num_rows($result) == 0)
{
echo The username i$username/u does not exist.;
exit;
}
To check for blank fields simply ask ... WHERE username = ''.
-Kevin
- Original Message -
From: Tyler Durdin [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, July 29, 2002 12:46 PM
Subject: [PHP] comparing a variable to value in DB
I have a column in my DB named username and i am trying to compare a
session
ID called $username to the field in my DB called username. The way i had
done it before was SELECT * from tablename WHERE Tablename.username ==
$username, but this does not seem to be working is there a better way to
do
this? Also, I would like to know how to tell if a field is blank. For
example, if my SELECT statement comes back and there is no data in the
username column how can i check for this?
_
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