Cannot Select DB using mssql

[rhodarose]

Good day!

I change my database from mysql to mssql, so I need to change the connection code in my php. I’m not familiar about the codes using mssql. Now cannot connect to my database.
I used the following:
php 5.1.4
IIS 6.0
Microsoft SQL Server 2005 Express Edition
SQL Server Management Studio Express
Here is my code:

<?php
//session_start(); 
//session_regenerate_id(); 

//if($_SESSION['loggedin']){ 
//the user is already logged in, lets redirect them to the other page 
  //  header("Location:company.php"); 
//} 


$server = "ISM\SQLEXPRESS";
//$db = "dbtest";
$connectOptions = array("Database" => "dbtest");
//Because UID and PWD are not specified in the connection option, the connection is made with Windows Authentication.
$conn = mssql_connect($server) or die("Could not connect");


$selected = mssql_select_db($connectOptions)or die("Cannot select DB");    


        $department = $_POST['department'];    
        $username = $_POST['username']; 

        $sql=mssql_query("SELECT `Department`, `Username` FROM `tbluser` WHERE `Department` = '{$department}' AND Username = '{$username}'") or die(mssql_min_error_severity()); 
        $ct = mssql_num_rows($sql); 
      
        if($ct == 1) { 
// im guessing this means that the user is valid. 
$_SESSION['loggedin'] = true; // now that the user is valid we change the session value. 
            $row = mssql_fetch_assoc($sql);   
            
            //$_SESSION['username'] = $row['Username'] ;
            //$_SESSION['department'] = $row['Department'];
            
            $Departments=array('aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg', 'hh', 'ii', 'jj');
            
            if (in_array($row['Department'], $Departments)){
                    header ('Location:company.php');
            }else{
                    echo "Incorrect Username or Department";
                    header ('Location:index.php');
            }
        }
?>

And when I run this code the result is:

Cannot select DB

Thank you in advance

[traq]

try changing
... or die("Cannot select DB");
to
... or die('MSSQL error: ' . mssql_get_last_message());
and see what (if) error message is being returned.

[rhodarose]

try changing
... or die("Cannot select DB");
to
... or die('MSSQL error: ' . mssql_get_last_message());
and see what (if) error message is being returned.

I try the code you suggested:

$db = "dbtest"; 
$selected = mssql_select_db($db) or die('MSSQL error' . mssql_get_last_message()); 

and the output is:

MSSQL error.The server principal "[domain nmae]\IUSR_[computer name]" is not able to access the database "dbtest" under the current securioty context.

Honestly, I have no idea about this error.

[rhodarose]

try changing
... or die("Cannot select DB");
to
... or die('MSSQL error: ' . mssql_get_last_message());
and see what (if) error message is being returned.

I try this code:

$db = "dbtest"; 
$selected = mssql_select_db($db) or die('MSSQL error' . mssql_get_last_message()); 

and the output is:
MSSQL error.The several principal "[domain name]\IUSR_[computer name]" is not able to access the databse "database name" under the current security context.

Then I research about this error and I find a step to fix the error, but I can't follow the steps because I can't find what they say in the steps.

here is the step:
To fix this SQL Server Management Studio 2008 (maybe in 2005 too), please do the following:

1.Open SQL Server Management Studio 2008
2.Connect to the database server as normal
3.Press F7 to open the "Object Explorer Details" window or click "View" >> "Object Explorer Details"
4.In the object explorer details window expand by double click on "Databases"
5.Right click on the column header and deselect "Collation" from the menu that will pop up
6.From the object explorer, refresh the "Databases"

I don't know what the appearance is if I am already in the Object Explorer Details view. And I can’t see the column header and also the Collation.

[traq]

unfortunately, I don't know much about mssql. It sound like your database might not be configured to accept connections from your script...? Is the database on the same server as the website? Beyond that, I'm not sure what more I can offer you.

Edit:

I found some possibly-helpful comments on php.net: mssql_connect.

Maybe someone else with more experience with mssql can help out?

[rhodarose]

unfortunately, I don't know much about mssql. It sound like your database might not be configured to accept connections from your script...? Is the database on the same server as the website? Beyond that, I'm not sure what more I can offer you.

Edit:

I found some possibly-helpful comments on php.net: mssql_connect.

Maybe someone else with more experience with mssql can help out?

Yes, the database and website is on the same server.

[bluewalrus]

If you log in to the database using the username and password you have in the php connection file can you run the select?

[rhodarose]

If you log in to the database using the username and password you have in the php connection file can you run the select?

I'm using Windows Authentication mode when i connect to SQL Server, so I have no username and password need to input because the username and password was hide. But my authentication mode is mixed.

On my database I have 5 users here are the list:

dbo
guest
INFORMATION_SCHEMA
DOMAIN\SQLServer2005MSSQLUser$COMPUTER NAME$SQLEXPRESS
sys

I don't know which user I am using when I connecting.

[bluewalrus]

Try querying

SELECT SYSTEM_USER

I've never used this and can't test this currently but it looks like it should work to tell you who you are querying as.

[rhodarose]

Try querying



I've never used this and can't test this currently but it looks like it should work to tell you who you are querying as.

Thank you,

I found the list of users from my database name->Security->Users

here are the users listed:

dbo
guest
INFORMATION_SCHEMA
DOMAIN\SQLServer2005MSSQLUser$COMPUTERNAME$SQLEXPRESS
sys

but when I run the SELECT SYSTEM_USER, the output is DOMAINNAME\Administrator,now which is the user in the listed,Is it the DOMAIN\SQLServer2005MSSQLUser$COMPUTERNAME$SQLEXPRESS?

Thank you