[PHP-DB] How to make it case sensitive?
I have a web site backup with PHP MySQL. I write a
script, so a member can log in into the member area.
I build a database for the username, password, and
some other information for the member. I set the
username (which type is varchar) as the primary key.
For the authentication scheme I use :
?php
..
..
$link = get_database(); //custom function to connect
to MySQL server and select the database
$query = SELECT * FROM user WHERE username = '$login'
AND password = PASSWORD('$password');
if (!($result=mysql_query($query, $link))) {
die(sprintf(Error: %d %s, mysql_errno($link),
mysql_error($link)));
}
if(!mysql_num_rows($result)) {
show_login_form(Invalid Login);//custom function to
print out a login form with a message as the function
argument
exit;
} else {
$guest = mysql_fetch_object($result);
}
mysql_free_result($result);
?
The script is just fine until I notice that the
username is case insensitive. So, if a member has a
username andy he can log in using
andy, Andy, aNdY, andY, and so on. I also
notice that I can't enter a new member with username
Andy, anDY, and so on as they will duplicate the
existing andy. Is this the natural behaviour of
MySQL or is there anyway to make it case sensitive?
I'm using PHP 4.0.6 MySQL 3.23.39.
That's all folks! Thanks before.
Denny
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Re: [PHP-DB] How to make it case sensitive?
On Fri, Sep 21, 2001 at 05:02:14PM +0100, Denny Suvanto wrote: The script is just fine until I notice that the username is case insensitive. So, if a member has a username andy he can log in using andy, Andy, aNdY, andY, and so on. I also notice that I can't enter a new member with username Andy, anDY, and so on as they will duplicate the existing andy. Is this the natural behaviour of MySQL or is there anyway to make it case sensitive? I'm using PHP 4.0.6 MySQL 3.23.39. You have to make the column case sensitive, binary will accomplish this. Something like: username varchar(20) binary -- Jason Stechschulte [EMAIL PROTECTED] -- I think it's a new feature. Don't tell anyone it was an accident. :-) -- Larry Wall on s/foo/bar/eieio in [EMAIL PROTECTED] -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DB] How to make it case sensitive?
On Fri, 21 Sep 2001 14:28:52 -0400, [EMAIL PROTECTED] (Jason Stechschulte) wrote: On Fri, Sep 21, 2001 at 05:02:14PM +0100, Denny Suvanto wrote: The script is just fine until I notice that the username is case insensitive. So, if a member has a username andy he can log in using andy, Andy, aNdY, andY, and so on. I also notice that I can't enter a new member with username Andy, anDY, and so on as they will duplicate the existing andy. Is this the natural behaviour of MySQL or is there anyway to make it case sensitive? I'm using PHP 4.0.6 MySQL 3.23.39. You have to make the column case sensitive, binary will accomplish this. Something like: username varchar(20) binary Another way to tackle the problem is to store the data into field in a set case by running strtoupper or strtolower on the data before you store it or retrieve it. It will also likely require less CPU power than running a fuzzy regexp based search. - Dave -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
