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*Solved* Selecting a database at login

swatisonee

By swatisonee
in PHP Coding Help

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swatisonee Regular Member

swatisonee

Posted
Posted
Hi,

I'm not sure if this is possible but heres my query anyhow.

I have 3 databases hosted on the same domain,server.

I have common users for all 3 but since they relate to three different lines, i need to keep their data separate.

Is there a way  I could modify the following login script so that when the user clicks on the Login button on the homepage, he is first asked to select a database ( A, B, C) and then he logs in to that db and the rest of the login script works as usual.

[code]<?
include "include/session.php";
include "include/z_db.php";               // this contains db name, pw, user details
?>
<!doctype html public "-//w3c//dtd html 3.2//en">

<html>

<head>
<title>:Login :</title>

<meta name="GENERATOR" content="Arachnophilia 4.0">
<meta name="FORMATTER" content="Arachnophilia 4.0">
</head>

<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#800080" alink="#ff0000">

<form action='loginck.php' method=post>

<table border='0' cellspacing='0' cellpadding='0' align=center>
  <tr id='cat'>
  <tr> <td bgcolor='#f1f1f1' ><font face='verdana, arial, helvetica' size='2' align='center'>  &nbsp;Username  &nbsp; &nbsp;
</font></td> <td bgcolor='#f1f1f1' align='center'><font face='verdana, arial, helvetica' size='2' >
<input type ='text' class='bginput' name='username' ></font></td></tr>

<tr> <td bgcolor='#ffffff' ><font face='verdana, arial, helvetica' size='2' align='center'>  &nbsp;Password 
</font></td> <td bgcolor='#ffffff' align='center'><font face='verdana, arial, helvetica' size='2' >
<input type ='password' class='bginput' name='password' ></font></td></tr>

<tr> <td bgcolor='#f1f1f1' colspan='2' align='center'><font face='verdana, arial, helvetica' size='2' align='center'> 
<input type='submit' value='Submit'> <input type='reset' value='Reset'>
</font></td> </tr>

</table></center></form>

</body>
</html>[/code]

LOGINCK.PHP
==========

[code]

<?

include "include/session.php";
include "include/z_db.php";

$username=$_POST['username'];
$password=$_POST['password'];
$ip=$_SERVER['REMOTE_ADDR'];
$tm = date("Y-m-d H:i:s");

?>
<!doctype html public "-//w3c//dtd html 3.2//en">

<html>

<head>
<title>:Login :</title>
<meta name="GENERATOR" content="Arachnophilia 4.0">
<meta name="FORMATTER" content="Arachnophilia 4.0">
</head>

<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#800080" alink="#ff0000">
<?
$username=mysql_real_escape_string($username);
$password=mysql_real_escape_string($password);

$sql = "SELECT * FROM Users WHERE Username='$username' AND Password = '$password'";
$result = mysql_query($sql);
if  ($myrow = mysql_fetch_array($result))
{
include "include/newsession.php";



$userid = $myrow["Userid"];

$result2=mysql_query("insert into Log (Sessionid,Userid,IP,Date) values('$_SESSION[id]','$userid','$ip','$tm')");

echo mysql_error();
            echo "<p class=data> <center><font face=Tahoma size=2>Thank you for logging in ";  echo $username ;
}
else {

session_unset();
echo "<font face='Verdana' size='2' color=red>Wrong Login. Use your correct  Username and Password and Retry <br><center><input type='button' value='Retry' onClick='history.go(-1)'></center>";

}

echo "<center> ";

if (mysql_result($result,0,"Type") == '2')
{
$Username=mysql_result($result,0,"Username");
printf("<p><font face=\"Tahoma\" size=\"2\"><a href=adminhead.php?Userid=$userid>Click here to proceed to your options</a></font>");
}
?>
</body>

</html>[/code]
Link to comment
https://forums.phpfreaks.com/topic/29628-solved-selecting-a-database-at-login/
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swatisonee Regular Member

swatisonee

Posted
  • Author
Posted
ok i got the first part. i put in a select box and then i amended loginck.php as under :

[code]<?

include "include/session.php";
include "include/z_db.php";

$username=$_POST['username'];
$password=$_POST['password'];
$ip=$_SERVER['REMOTE_ADDR'];
$tm = date("Y-m-d H:i:s");
$dbtype = $_POST['dbtype'];
?>[/code]
But the header file include "include/z_db.php"; contains db info so it will mean i cannot have the header appearing on the sheet. Also, how do i have this selection of dbname reflected in the include file that is as under :

[code]<?
error_reporting(E_ERROR | E_PARSE | E_CORE_ERROR);

$dbservertype='mysql';

$servername='localhost';

$dbusername='abcd;
$dbpassword='abcd';

$dbname='abcd';

connecttodb($servername,$dbname,$dbusername,$dbpassword);
function connecttodb($servername,$dbname,$dbuser,$dbpassword)
{
global $link;
$link=mysql_connect ("$servername","$dbuser","$dbpassword");
if(!$link){die("Could not connect to MySQL");}
mysql_select_db("$dbname",$link) or die ("could not open db".mysql_error());
}
?>[/code]

Thanks.
Switch0r Newbie

Switch0r

Posted
Posted
Would it not be simpler to have all the tables you need in the same db, with a prefix on the table name?

eg. info1_blah, info2_blah, info3_blah

Then you can still keep the same header file you already have, and make the drop down box select the table name instead?

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