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die message if query unsuccessful...

Posted on 2004-08-10
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Last Modified: 2006-11-17
Hi,
The following is a query to see if a database record matches $sender_email....works fine, but I can't seem to get the 'die' bit to work. i.e. if someone's entered an email which doesn't exist in the records, it doesn't seem to display 'Your record doesn't exist'...

$result=mysql_query("SELECT * FROM members where mem_email='$sender_email'") or die("Your Record does not exist" . mysql_error());
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Question by:skylabel
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by:ThaSmartUno
ThaSmartUno earned 250 total points
ID: 11769345
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winglis4 earned 250 total points
ID: 11769512
Actually, I believe you are testing for this at the wrong time.

This is from php.net reference on the mysql_query statement.
  Only for SELECT,SHOW,EXPLAIN or DESCRIBE statements mysql_query()  returns a resource identifier or FALSE if the query was not executed correctly. For other type of SQL statements, mysql_query() returns TRUE on success and FALSE on error. A non-FALSE return value means that the query was legal and could be executed by the server. It does not indicate anything about the number of rows affected or returned. It is perfectly possible for a query to succeed but affect no rows or return no rows.

You should add your error checking afterwards, with a mysql_num_rows call, or the like.

This is not tested, but I think it should at least point you in the right direction.

$result=mysql_query("SELECT * FROM members where mem_email='$sender_email'");
$numrows = mysql_num_rows($result);
if ($numrows < 1)
   {echo "Your Record does not exist";
    exit;  
}

Good luck!
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by:skylabel
ID: 11769729
thank you ...thank you.....
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