odbc_connect

(PHP 4, PHP 5, PHP 7)

odbc_connect — Connect to a datasource

说明

odbc_connect ( string $dsn , string $user , string $password [, int $cursor_type ] ) : resource

The connection id returned by this functions is needed by other ODBC functions. You can have multiple connections open at once as long as they either use different db or different credentials.

With some ODBC drivers, executing a complex stored procedure may fail with an error similar to: "Cannot open a cursor on a stored procedure that has anything other than a single select statement in it". Using SQL_CUR_USE_ODBC may avoid that error. Also, some drivers don't support the optional row_number parameter in odbc_fetch_row(). SQL_CUR_USE_ODBC might help in that case, too.

参数

dsn

The database source name for the connection. Alternatively, a DSN-less connection string can be used.

user

The username.

password

The password.

cursor_type

This sets the type of cursor to be used for this connection. This parameter is not normally needed, but can be useful for working around problems with some ODBC drivers.

The following constants are defined for cursortype:

  • SQL_CUR_USE_IF_NEEDED
  • SQL_CUR_USE_ODBC
  • SQL_CUR_USE_DRIVER

返回值

Returns an ODBC connection or (FALSE) on error.

范例

Example #1 DSN-less connections

<?php
// Microsoft SQL Server using the SQL Native Client 10.0 ODBC Driver - allows connection to SQL 7, 2000, 2005 and 2008
$connection = odbc_connect("Driver={SQL Server Native Client 10.0};Server=$server;Database=$database;", $user, $password);

// Microsoft Access
$connection = odbc_connect("Driver={Microsoft Access Driver (*.mdb)};Dbq=$mdbFilename", $user, $password);

// Microsoft Excel
$excelFile = realpath('C:/ExcelData.xls');
$excelDir = dirname($excelFile);
$connection = odbc_connect("Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=$excelFile;DefaultDir=$excelDir" , '', '');
?>

参见

  • For persistent connections: odbc_pconnect() - Open a persistent database connection

User Contributed Notes

fr at freedom2ct dot com 24-Apr-2019 01:14
Under Windows odbc_connect (and PDO ODBC) apparently uses the Windows locale to handle input and output from e.g. MS access and MS SQL Server databases.

This causes lots of headaches if one is using other than ASCII characters.

Work-round solutions like utf8_encode and mb_convert both fails.

The solution I fund working is to perform the following changes to Windows

Control Panel > Region > Administrative > Change system locale
>Check '<i>Use Unicode UTF-8 for worldwide language support.</i>'
Matt 03-Sep-2015 03:00
In newer versions you may need: odbc_connect("Driver={Microsoft Access Driver (*.mdb, *.accdb)};Dbq=C:/Folder/database.mdb", "", "");
cjbauer2 at hotmail dot com 21-May-2015 08:52
/* Connecting to Microsoft Access with PHP
   $conn = odbc_connect("Driver={Microsoft Access Driver (*.mdb)};
   Dbq=$mdb_Filename", $user, $password);
  
This does NOT work on Windows servers.
Instead, it needs
   $conn->Open("Provider=Microsoft,.Jet.OLEDB.4.0; Data Source=......

Point the variable $mdb_Filename to...
   Data Source=C:\inetpub\wwwroot\php\mdb_Filename
   or wherever the virtual directory points.
Luis [from] redcodestudio [dot] com 02-Mar-2015 05:48
Following  simonr at no2sp at m dot cogapp dot com contribution (thank you), I tried to connect to a local MS SQL Server 2014 Express database by creating a DSN-less connection using ODBC. It worked, here's the code.

<?php
// Replace the value of these variables with your own data
$user = 'username';
$pass = 'password';
$server = 'serverName\instanceName';
$database = 'database';

// No changes needed from now on
$connection_string = "DRIVER={SQL Server};SERVER=$server;DATABASE=$database";
$conn = odbc_connect($connection_string,$user,$pass);

if ($conn) {
    echo "Connection established.";
} else{
    die("Connection could not be established.");
}
?>
Andrew Wippler 23-May-2012 09:16
http://www.microsoft.com/en-us/download/details.aspx?id=13255 for the latest odbc driver for .accdb files.
Abhinav 04-Mar-2012 02:13
Pls ensure that the MSAccess database format is ".mdb".
If it is ".accdb" it will not work!
ewilde aht bsmdevelopment dawt com 17-Feb-2010 01:08
Once you've set up a UnixODBC connection to Informix (as described elsewhere, for example in http://www.unixodbc.org/), the following PHP code will access a database via its DSN:

<?php
// We must set these environment variables for Informix to work.  Either
// do it here or in php.ini.
putenv("INFORMIXDIR=/usr/share/informix");
putenv("ODBCINI=/usr/local/unixODBC/etc/odbc.ini");

// Open up a connection to the database.
if (!($con = odbc_connect("CollectOh", "", "")))
  echo "<p>Connection to CollectOh failed.</p>\n";
else
  {
  // Let's try enumerating all of the tables in the database (there ain't
  // no "show tables" here).
  if (($res = odbc_exec($con, "select * from SYSTABLES")))
    {
    echo "<p>\n";
    odbc_result_all($res);
    echo "</p>\n";
    }

  // Close up shop, like good dobies.
  odbc_close($con);
  }
?>
Shyam Hazari 25-Oct-2009 03:43
Here is my successful odbc_connect with mysql on Ubuntu. It took me a while to figure this out.

Installed following packages using apt-get.

apache2
apache2-mpm-prefork
apache2-utils
apache2.2-common
libapache2-mod-php5
libdbd-mysql-perl
libmyodbc
libmysqlclient15off
mysql-client-5.0
mysql-common
mysql-server-5.0
mysql-server-core-5.0
odbcinst1debian1
php5
php5-cli
php5-common
php5-odbc
unixodbc

/etc/odbc.ini
------------
myodbc3      = MySQL ODBC 3.51 Driver

[myodbc3]
Driver         = /usr/lib/odbc/libmyodbc.so
Description  = MySQL ODBC 3.51 Driver
Server        = localhost
Port           = 3306
User           = shyam
Password    = mypass
Database    = mysql
Option        = 3  
Socket       = /var/run/mysqld/mysqld.sock

/etc/odbcinst.ini
----------------
[MySQL ODBC 3.51 Driver]
Description    = MySQL driver
Driver        = /usr/lib/odbc/libmyodbc.so
Setup        = /usr/lib/odbc/libodbcmyS.so
CPTimeout    =
CPReuse    =
UsageCount    = 1

my php script
------------

<html>
<body>
<?
$conn = odbc_connect("DRIVER={MySQL ODBC 3.51 Driver};Server=localhost;Database=mysql", "shyam", "mypass");

$sql = "SELECT user from user";
$rs = odbc_exec($conn,$sql);
echo "<table><tr>";
echo "<th>User Name</th></tr>";
while (odbc_fetch_row($rs))
 {
 $user = odbc_result($rs,"user");
 echo "<tr><td>$user</td></tr>";
}
odbc_close($conn);
echo "</table>";
?>

</body>
</html>
drew at pixelburn dot net 02-Jul-2009 05:32
[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

If you keep running  into this on the 64 bit versions of windows, ie server 2008,  and none of the other solutions helped.

In a 64 bit windows server operating system, there are TWO odbc managers. When you pull up the usual menu for the odbc / dsn system, it is for the 64 bit odbc manager, and 32 bit applications (vb 6.0, PHP 5) will not work using these dsn's.

This is where the 32 bit odbc manager is:

C:\Windows\SysWOW64\odbcad32.exe
Anonymous 11-Sep-2008 01:16
This might be obvious to some, but here is a quick tidbit that might save you some time if you're using FreeTDS in Linux:

Be sure that you have these two lines in freetds.conf:
dump file = /tmp/freetds.log
dump file append = yes

so you can tail -f it in the background of debugging the problem.  This helped me find my issue on on CentOS Linux: 
 
1) tsql test works
2) isql test works
3) odbc connection in php also works WHEN RUN FROM THE SHELL
4) running PHP through apache does NOT work.

my /tmp/freetds.log file told me:
net.c:168:Connecting to MYDBSERVER port MYDBPORT
net.c:237:tds_open_socket: MYDBSERVER:MYDBPORT: Permission denied

and the answer was my firewall/SELinux was denying the Apache processes access to connect to the remote MSSQL DB port, but my shell accounts were fine.
Anonymous 11-Jun-2008 08:08
I have used mdbtools to access .mdb file on my ubuntu box, as ODBC driver (and PHP)
It has very few features, and practically unusable.
Ceeclipse 05-Feb-2008 01:36
"Returns an ODBC connection id or 0 (FALSE) on error."

Keep in mind that the following code in PHP5 will not work properly:

<?php

if( odbc_connect("test", "test", "test") === false ) {
    // Your error reporting/handling here..
}

?>

odbc_connect() returns an integer, and not a PHP5 boolean!
harald dot angel at gmail dot com 06-Dec-2006 06:12
- Windows - OS
- Apache
- ODBC-Connction to MS-Access DB on a:
- Network Share

After many hours searching here′s how it works:

- Map the Network Drive where the mdb is located
- Setup System DSN in Control Panel with mapped Drive
- Open Registry at:
HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC_INI
- Edit the for example "M:\" to "\\server\..."
- Close Regedit
- The Apache-Service must run with a Domain (network)-User!!
- After that you can connect using:

$conn = odbc_connect('your-dsn-name','','');

hope that makes someone happy :)
bye
Ray.Paseur sometimes uses GMail 28-Nov-2006 07:48
To connect and show tables in a Microsoft Access data base (created in *.asp pages)...

$dbq    =    str_replace("/", "\\", $_SERVER["DOCUMENT_ROOT"]) . "\\path\\to\\database.mdb";
if    (!file_exists($dbq)) { echo "Crap!<br />No such file as $dbq"; }

$db_connection = odbc_connect("DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=$dbq", "ADODB.Connection", "password", "SQL_CUR_USE_ODBC");

$result = odbc_tables($db_connection);

while (odbc_fetch_row($result)) {
    if(odbc_result($result,"TABLE_TYPE")=="TABLE") {
        echo "<br />" . odbc_result($result,"TABLE_NAME");
    }
}
sven dot delmeiren at cac dot be 09-Aug-2006 07:39
Hi,

Instructions on how to connect to a Progress database on Linux using the Merant ODBC driver can be found at http://www.progteg.com/english/documents.html.

Kind regards,

Sven Delmeiren
Computers & Communications NV
Kalle Sommer Nielsen 08-Apr-2006 06:30
To use MySQL via ODBC:
<?php
    $db_host        = "server.mynetwork";
    $db_user        = "dbuser";
    $db_pass        = "dbpass";
    $dsn =         "DRIVER={MySQL ODBC 3.51 Driver};" .
            "CommLinks=tcpip(Host=$db_host);" .
            "DatabaseName=$db_name;" .
            "uid=$db_user; pwd=$db_pass";

    odbc_connect($dsn, $db_user, $db_pass);
?>
gekkeprutser at gmail dot com 06-Dec-2005 06:35
I also had a problem with this message: ([ODBC SQL Server driver]Allocation of a Sybase Open Client Context failed). The message only appeared after the server had run for a few hours, so I expected resource starvation. However it was a settings problem and I thought this might benefit others too.

In addition to putting a <?php putenv ("SYBASE=c:\sybase"); ?>  as described by oottavi above, I also had so specify a locale by setting <?php putenv ("LC_ALL=default"); ?>.

Even though my locale was already set to a valid one (en_US) I had to set this environment variable to make it work anyhow.
webmaster at dzconnexion dot com 05-May-2005 08:44
Concerning the note posted by Grisu on the 23-Dec-2003 11:51: Connect to an MS-Access Database on the Network via ODBC,

PLEASE dont forget to put double slashes as follows:

"\\\\Server\\folder\\database.mdb"

when setting up the registry key as indicated...
rotwhiler at hotmail dot com 29-Apr-2005 08:42
For anyone having problems with WHERE clauses in their MS Access ODBC requests here?s what I found: SQL requests sent to Access must include quotes around the criteria.

$sel = "SELECT * FROM table1 WHERE cust_id = 'cust1'";
outputs:
SELECT * FROM table1 WHERE cust_id = 'cust1'
And works.

$sel = ?SELECT * FROM table1 WHERE cust_id = cust1?;
outputs:
SELECT * FROM table1 WHERE cust_id = cust1
And doesn?t work.

Here?s the whole block of code:
$conn = odbc_connect("database1","","");
$sel = "SELECT * FROM table1 WHERE cust_id = 'cust1'";
$exec = odbc_exec($conn,$sel);
while($row = (odbc_fetch_array($exec)))
 $serv[odbc_result($exec,'label')] = $row;
print_r($serv);
aurelien marchand 30-Mar-2005 07:54
For three days I fought to be able to connect our Linux intranet server to our AS400 database through ODBC and PHP on Mandrake. I installed everything I thought would work but I still got a: odbc_connect(): SQL error: Missing server name, port, or database name in call to CC_connect., SQL state IM002 in SQLConnect

Note that isql was working great but php was failing to connect.

The solution:
I located and found a PHP module called php-unixODBC (to oppose with php-odbc). Once installed (even though it wasn't for the right version of PHP), I realised it didn't place the file properly. The ini file was in /etc/php/ instead of /etc/php.d/, so I moved it there and renamed the old /etc/php.d/36_odbc.ini to /etc/php.d/36_odbc.ini.sav, so that I now had /etc/php.d/36_unixodbc.ini. I restarted the httpd server and now I was able to access the as400.

If you have questions, email _artaxerxes2_at_iname_dot_com (sans the underscore).
ramsosa at yahoo dot com 11-Mar-2005 11:47
Connecting to ADS (Advantage Database Server) using Windows. When you setup data source in ODBC Manager (PHP_SERVER) don't use a mapped drive in Database or Data Dictionary Path, or you cannot connect:

Lets suppose that you share C:\ADS_SERVER\ADS as ADS.
Mapping to a drive X: in PHP_SERVER

Instead of:

X:\APP\DATA\APP.ADD

use UNC:

\\ADS_SERVER\ADS\APP\DATA\APP.ADD

if the ADS ODBC dialog don?t let you to browse a Network Drive type it manually
aamaral at 0kbps dot net 03-Mar-2005 10:16
Two additional notes regarding ODBC connections to a Network Sybase SQL Anywhere 8 Server..

I wrote a script using the PHP5 CLI binary that monitors a directory for changes, then updates a Network Server SQL Anywhere 8 database when a change was detected. Idealy, my program would run indefinately, and issue odbc_connect()/odbc_close() when appropriate. However, it seems that once connected, your odbc session is limited to 30 seconds of active time, after which, the connection becomes stale, and no further queries can be executed.  Instead, it returns a generic "Authentication violation"  error from the odbc driver.

Here's an example:

<?php
  $conn=odbc_connect($connect_string,'','');
  $result=odbc_exec($qry,$conn);  //returns data
  sleep(31);
  $result=odbc_exec($qry,$conn);  //"Authentication Violation"
?>

Additionally, it seems that odbc_close() doesn't truely close the connection (at least not using Network SQL Anywhere 8). The resource is no longer usable after the odbc_close() is issued, but as far as the server is concerned, there is still a connection present. The connection doesn't truely close until after the php script has ended, which is unfortunate, because a subsequent odbc_connect() commands appear to reuse the existing stale connection, which was supposedly closed.

My workaround was to design my script exit entirely after a the database update had completed.  I then called my script whithin a batch file and put it inside an endless loop.

I'm not sure if this is a bug with PHP or what, but I thought I'd share in case someone else is pulling their hair out trying to figure this one out...
aamaral at 0kbps dot net 16-Feb-2005 12:29
To connect to Sybase SQL Server Anywhere 8.0 on Windows use the following:

<?php
//================================================================

  // Configure connection parameters
  $db_host        = "server.mynetwork";
  $db_server_name = "Dev_Server";
  $db_name        = "Dev_Data";
  $db_file        = 'c:\dbstorage\dev.db';
  $db_conn_name   = "php_script";
  $db_user        = "dbuser";
  $db_pass        = "dbpass";

//================================================================
  $connect_string = "Driver={Adaptive Server Anywhere 8.0};".
                    "CommLinks=tcpip(Host=$db_host);".
                    "ServerName=$db_server_name;".
                    "DatabaseName=$db_name;".
                    "DatabaseFile=$db_file;".
                    "ConnectionName=$db_conn_name;".
                    "uid=$db_user;pwd=$db_pass";

  // Connect to DB
  $conn = odbc_connect($connect_string,'','');

  // Query
  $qry = "SELECT * FROM my_table";

  // Get Result
  $result = odbc_exec($conn,$qry);

  // Get Data From Result
  while ($data[] = odbc_fetch_array($result));

  // Free Result
  odbc_free_result($result);

  // Close Connection
  odbc_close($conn);

  // Show data
  print_r($data);

//================================================================
?>
manuel dot vecino at steria dot es 16-Nov-2004 03:04
Hi Mario, I changed a bit your script to suit my configuration,
I also included a lines to close the connection.
Thanks for the script
I am running apache 2.0.52 and PHP 5.0.2. Windows 2000
SQL 2000

<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body bgcolor="#FFFFFF">
<table width="75%" border="1" cellspacing="1" cellpadding="1" bgcolor="#FFFFFF">
  <tr bgcolor="#CCFFFF">
    <td height="22"><b>Tipo</b></td>
    <td height="22"><b>Marca</b></td>
    <td height="22"><b>Modelo</b></td>
  </tr>

<?php
$cx=odbc_pconnect("RAMPANT","Invent","pass","");
$cur=odbc_exec($cx,"select tipo,marca,modelo from inv_equipos");
while(odbc_fetch_row($cur))
{
//collect results
$tipo=odbc_result($cur,1);
$marca=odbc_result($cur,2);
$modelo=odbc_result($cur,3);
//format and display results
    print ("<tr>");
    print ("<td>$tipo</td>");
    print ("<td>$marca</td>");
    print ("<td>$modelo</td>");
    print ("</tr>");
    }

//disconnect from database
    odbc_close($cx);

    ?>
   
 
</table>
</body>
</html>
emin dot eralp at bg dot com dot tr 15-Oct-2004 09:46
A VERY IMPORTANT NOTE OF CAUTION FOR WINDOWS USERS DEVELOPING ON NON-NETWORKED SYSTEMS

If like me you are developing on a stand-alone system (Windows XP professional running IIS).  Make sure that the the folder your database resides in is shared, otherwise you will get the following type of message:

Current Recordset does not support updating. This may be a limitation of the provider, or of the selected locktype.'

and you will spend 2 days (as I did) looking for the right combination of settings to write the record properly.
d-m at eudoramail dot com 22-Jun-2004 12:05
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
Compiling Apache + PHP + DB2 8.1  without the DATABASE instaled at the WebServer Machine!
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

Go to the machine that you have DB2 DATABASE instaled and COPY the include files from the DB2 8.1 DataBase to the PHP source directory:

Sample:
[root@DB2_SERVER/usr/opt/db2_08_01/include]# scp * user@webserver:/usr/src/php-4.3.7/ext/odbc/.

INSTALLING THE WEBSERVER!
Enter in the WebServer as root and ...

-- DB2 --
Install Administration Client
Catalog the DataBases
-- END DB2 --

-- LIB --
vi /etc/ld.so.conf
add line: /opt/IBM/db2/V8.1/lib
execute: ldconfig
-- END LIB --

Download PHP + MODSSL + OPENSSL + APACHE!

--- APACHE ---
cd ../mod_ssl-2.8.18-1.3.31
./configure  --enable-module=so --with-apache=../apache_1.3.31 --with-ssl=../openssl-0.9.7d
cd ../apache_1.3.31/
make
make certificate TYPE=custom
make install
--- END APACHE ---

OBS:  CRIPT the CA.key
    DO NOT CRYPT server.key

-- PHP --
cd ../php-4.3.7
./configure  --with-apxs=/usr/local/apache/bin/apxs --with-mysql --with-pgsql --with-zip=/usr/local/lib --with-ibm-db2=/opt/IBM/db2/V8.1
make
make install
-- END PHP ---

-- APACHE EDIT TO RUN DB2 --
vim /usr/local/apache/bin/apachectl
add line: . /home/db2inst1/sqllib/db2profile
-- END APACHE EDIT TO RUN DB2 --
NOW run /usr/local/apache/bin/apachectl startssl

DONE !!!!!

You have a WebServer with PHP with DB2,MYSQL,POSTGRES and SSL Support.

Enjoy IT!

[]?s
Helio Ferenhof
simonr at no2sp at m dot cogapp dot com 01-Jun-2004 05:26
To make a DSN-less connection using ODBC to MS-SQL:

<?php

$connection_string = 'DRIVER={SQL Server};SERVER=<servername>;DATABASE=<databasename>';

$user = 'username';
$pass = 'password';

$connection = odbc_connect( $connection_string, $user, $pass );

?>

servername is the name of the database server

databasename is the name of the database

Note, I've only tried this from a windows box using the Microsoft ODBC drivers.
atze at o2o dot com dot au 04-Feb-2004 03:41
To connect to a SQL DB on a unix srv via odbc one can use one of the following solutions.

1. having an odbc.ini (~/.odbc.ini)

[PostgreSQL]
Description         = PostgreSQL template1
Driver              = PostgreSQL
Trace               = Yes
TraceFile           = /tmp/odbc.log
Database            = PerfTest
Servername          = localhost
UserName            = boss
Password            = BigBoss
Port                = 5432
Protocol            = 6.4
ReadOnly            = Yes
ConnSettings        =

[Default]
Driver = /local/lib/libodbc.so

2. specifying a DSN

function DBCALL($SQL)
{       
$U = "boss";
$DB = "PerfTest";
$P = "BigBoss";
$Srv = "llocalhost";
$DSN = "Driver=PostgreSQL;Server=$Srv;Database=$DB";
       
echo "Trying to connect to $DSN\n";   
if ($CID = odbc_connect ("$DSN","$U","$P",SQL_CUR_USE_ODBC))
{
    echo "still trying CID = $CID\n";
    if ($RES = odbc_exec($CID, $SQL))
    {
        echo "RES = $RES\n";
        print_r($RES);
        echo "\n";
           
        $NR = odbc_num_rows($RES);

<snip>

Hope this helps.
Grisu 23-Dec-2003 03:51
Connect to an MS-Access Database on the Network via ODBC

Apache 2.0.47 with PHP 4.3.4 running on Windows XP Pro

If you encounter the error
"[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified, SQL state IM002 in SQLConnect"

you should make sure to have the following done:

The ODBC-link must be a System-DNS and not a User-DNS. Configure your ODBC-link and then modify your configuration with regedt32. Go to HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC_INI and open your ODBC-link. The field DBQ contains the path to your database. This path must be without Drive-names (e. g. "M:") so change it to "\\Server\folder\database.mdb". This setting is changed each time you modify your ODBC-configuration using the Windows-tool, so make sure you do this afterwards.

Then you go to the Services-Section in your Systemmanagement. Select the properties of your Apache module. In the login-section you have to make sure you login with a valid User-Account for your Network-Server.

Please note that this way you still have no permission to access linked tables within the linked database

Funny enough all this is not necessary on Win98.
TheFrenZ 07-Nov-2003 04:22
If you encounter the error:

"[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified, SQL state IM002 in SQLConnect"

Windows with PHP, running under IIS/PWS, PHP runs under the anonymous user, INET_USR_"server" (were "server" is your servername).
This user has no read access in the ODBC System DSN tree in the registry.

With regedt32 open HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC_INI and give read access to every ODBC entry you want to use with PHP.

Beware: With every change to a ODBC system DSN, the rights on that ODBC system DSN are gone again, and you have to change the rights again manualy.

Under Apache, PHP runs under the System account and you wont have this problem.
lffranco at dco.pemex.com 27-Aug-2003 06:08
As always Microsoft is clueless... I've been trying to connect to an Access database on a W2K on the network (not a local file, but mapped on the V: drive), via ODBC.

All I got is this message:
Warning: SQL error: [Microsoft][ODBC Microsoft Access Driver] '(unknown)' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides., SQL state S1009 in SQLConnect in d:\apache\cm\creaart.php on line 13

So... I started looking al around and looks like the ODBC driver has some severe problems:

1. It cannot access a Access database via a mapped drive. And this is for ANY application, name it PHP, Coldfusion, whatever
2. You cannot make a system DSN with a UNC (\\Server\resource), so you must map the drive

Cute isn't it?

So... I quit on ODBC and went via ADO, this is the code that works:

=== CODE ===

$db = '\\\\server\\resource\\db.mdb';
$conn = new COM('ADODB.Connection');
$conn->Open("DRIVER={Driver do Microsoft Access (*.mdb)}; DBQ=$db");

// Driver do Microsoft Access (*.mdb)
// must be the name in your odbc drivers, the one you get
// from the Data Sources (ODBC).
// In this case, I'm in Mexico but the driver name is in portuguese, thanks Microsoft.

$sql = 'SELECT username FROM tblUsuarios';
$res = $conn->Execute($sql);
while (!$res->EOF)
{
    print $res->Fields['username']->Value . "<br>";
    $res->MoveNext();
}

$res->Close();
$conn->Close();
$res = null;
$conn = null;

=== /CODE ===
eric dot ramirez at iberoonline dot com 30-May-2003 10:44
Connecting with SQL in a ODBC source

2 ways, one is if your SQL server is runign in your machine

$ser="LOCALMACHINE"; #the name of the SQL Server
$db="mydatabase"; #the name of the database
$user="myusername"; #a valid username
$pass="my pass"; #a password for the username

# one line
$conn=odbc_connect("Driver={SQL Server};Server=".$ser.";Database=".$db,$user,$pass);
# one line

the second way is if the SQL Server is runing in other machine but in the same network

$ser="LOCALMACHINE"; #the name of the SQL Server
$db="mydatabase"; #the name of the database
$user="myusername"; #a valid username
$pass="my pass"; #a password for the username

#one line
$conn=odbc_connect("DRIVER=SQL Server;SERVER=".$ser.";UID=".$user.";PWD=".$pass.";
DATABASE=".$db.";
Address=".$ser.",1433","","");
#one line
richard at lordrich dot com 02-May-2003 04:07
Because the dsn needs to be system-wide, you will also need write access to the registry to set it up.
Yvan Ecarri 21-Mar-2003 03:01
I fighted with the "Data source name not found and no
default driver specified, SQL state IM002 in SQLConnect"
error for a while trying to connect via ODBC to a SQL Server
2000. Finally I found this workaround:

$cn = odbc_connect("Driver={SQL Server};Server=MyServer;Database=MyDatabase",
"MyUser","MyPassword")

Change "MyServer", "MyDatabase", "MyUser" and "MyPassword" to the right values.

I guess that adding the "Integrated Security=YES" will work too.

Regards,

Yvan Ecarri, MCDBA, MCSD
jeremy at austin.ibm.com 28-Feb-2003 02:20
here's a quick note about using php and db2 that cost me a couple of hours and several recompiles trying to figure out why it didn't work.

put the below line in any script

     putenv("DB2INSTANCE=db2inst1");

Or, set that in your webserver environment somehow.
oottavi at netcourrier dot com 06-Nov-2002 10:36
If you have problem to connect to sybase with an ODBC driver, try to set up your SYBASE environment variable to the correct directory.
([ODBC SQL Server driver]Allocation of a Sybase Open Client Context failed)

Ex : Here is a connection to a DSN

putenv("SYBASE=c:\sybase");

$conn  =  odbc_connect("DSN1","USER","PASSWORD");
echo  "conn:  $conn";
if  ($conn  <=  0)  {
        echo  "Error  in  connection";
        exit;
} else  {
        echo  "<P>Connection  successful\n";
};
mortoray at ecircle-ag dot com 31-Oct-2002 04:31
If you have switched to a new Version of PHP (from 4.1 to 4.3) and at the same time have upgraded your Apache server (from 1.x to 2.x) and suddenly get the error:

"[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified, SQL state IM002 in SQLConnect"

It may be because you have your ODBC connections listed (Control Panel | ODBC) as User DSN rather than System DSN.  They need to be System DSN in order for the PHP in the Apache service to access to them.
osiris at rich-howard dot co dot uk 24-Jul-2002 10:34
Thought I'd add a note here on this. I'm using Apache 2.0.39 on Windows XP and PHP 4.2.2.

It helps a lot if you don't use capital letters in your dsn string.

Thought I also comment on the posts about using system dsns over file dsns. There are lots of posts saying use systems not files, but none (that I have seen) which explain why.

Essentially: File DSNs are specific to the current user, therefore the Internet Guest User Account doesn't have rights to them. Systems are available to everyone.

Regards

Osiris :)
d-m at eudoramail dot com 05-Feb-2002 09:40
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
odbc_connect ERRO at DB2
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

To Solve the problem with DB2 + PHP folow this steps!

INSTALL THE PROGRAM LIKE THIS!

-- DB2 --
Install the DataBank
Install Application Tools
-- END DB2 --

--- APACHE ---
cd ../mod_ssl-2.8.5-1.3.22/
./configure  --enable-module=so --with-apache=../apache_1.3.22/  --with-ssl=../openssl-0.9.6c/
cd ../apache_1.3.22/
make
make certificate TYPE=custom
make install
--- END APACHE ---

-- PHP --
cd ../php-4.1.1/
./configure  --with-apxs=/usr/local/apache/bin/apxs --with-pgsql --with-mysql --with-ibm-db2=/usr/IBMdb2/V7.1
make
make install
-- END PHP ---

-- LIB --
vim /etc/ld.so.conf
add line: /usr/IBMdb2/V7.1/lib
execute: ldconfig
-- END LIB --

To Solve the error ODBC_CONNECT exec the db2profile at the apachectl!!! Like this!

-- APACHE EDIT TO RUN DB2 --
vim /usr/local/apache/bin/apachectl
add line: . /usr/home/db2inst1/sqllib/db2profile
-- END APACHE EDIT TO RUN DB2 --

NOW run /usr/local/apache/bin/apachectl startssl

DONE !!!!!

You have a DB2 + APACHE + SSL + PHP + MYSQL + POSTGRES .

Enjoy

[]?s
Helio Ferenhof
whuang at cadvision dot com 18-Jan-2002 06:32
If you (still) get that annoying error like and you're using Access:

MSaccess DSN(Microsoft Jet engine couldn't open the database 'Unknow'.
Another user is using it exclusively, or you dont have permission to use
it).

Make sure your access *.mdb file is not on a network drive. Put it on C: or D: disable all security first so you can test the connection. Once you can verify that you can connect add appropriate passwords, group access, etc.

-=WH=-
Mahmoud at iastate dot edu 29-Nov-2001 12:35
WINNT 4 Workstation, PHP4

odbc_connect() kept giving me weird errors when trying to connect to a MSaccess DSN(Microsoft Jet engine couldn't open the database 'Unknow'. Another user is using it exclusively, or you dont have permission to use it).

After going nuts for a while, I realized that my database name had a space in it (course surveys.mdb), I shortened the name to eliminate the space .. and everything worked fine.
lomaky at yahoo dot com 23-Nov-2001 02:30
// simple conection


$cnx = odbc_connect('cliente','Administrador',''); 
//query
$SQL_Exec_String =  "select * from Clientes";   
//ejecucion query
$cur= odbc_exec( $cnx, $SQL_Exec_String ); 
echo  "<table border=1><tr><th>Dni</th><th>Nombre</th>". 
         "<th>codigo</th><th>ciudad</th></tr>\n"; 
    while( odbc_fetch_row( $cur ) ) { 
       $Dni= odbc_result( $cur, 1 ); 
       $Nombre= odbc_result( $cur, 2 ); 
       $codigo= odbc_result( $cur, 3 );
       $ciudad= odbc_result( $cur, 4 );
        echo  "<tr><td>$Dni</td><td>$Nombre</td>". 
             "<td>$codigo</td><td>$ciudad</td></tr>\n"; 
    } 
    echo  "</table>";
root at mediamonks dot net 19-Nov-2001 04:03
Due to multiple requests, more for DSN-less connections:

<?php
$db_connection = new COM("ADODB.Connection");

$db_connstr = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=". realpath("../databases/database.mdb") ." ;DefaultDir=". realpath("../databases");
$db_connection->open($db_connstr);
$rs = $db_connection->execute("SELECT * FROM Table");
$rs_fld0 = $rs->Fields(0);
$rs_fld1 = $rs->Fields(1);
while (!$rs->EOF) {
  print "$rs_fld0->value $rs_fld1->value\n";
  $rs->MoveNext(); /* updates fields! */
}
$rs->Close();
$db_connection->Close();
?>

(Prints first 2 columns for each row.)
cs at coolspot dot de 10-Jul-2001 01:01
We've tried hard to connect from php to our IBM DB2 RS/6000 Server. It worked after we compiled with --ibm-db2= option, but it was unbelievable
slow.

No, just testing some options, we found out that it went from very slow (getting 100 records lasts 1 till 10 seconds) to fast access (almost same speed as with using JDBC from Servlets) to 0.2 till 0.3 seconds.

We simply added the optional parameter Cursortype to odbc_connect, and with the cursortype SQL_CUR_USE_ODBC it changed in that way!

Hope this helps anybody who must connect to db2 ;)
cpoirier at shelluser dot net 09-Mar-2001 01:26
After much testing, and I think supported by a comment I found in the code, I have come to a disturbing conclusion: odbc_connect() in PHP4.04pl1 is really an odbc_pconnect(), with all the implications for transaction scoping.  Specifically, each time you call odbc_connect( "X", "" "" ), you will get the same physical ODBC Connection, and odbc_commit() and odbc_rollback() will affect all copies.  The only solution I could find was to use several different DSNs to access the database.
fc99 at smm dot de 26-Jan-2001 06:23
If you don't want to specify your login credentials on your web server, you can leave the login fields blank to use the integrated windows security like here:

odbc_connect("DSN=DataSource","","");

Make sure you have switched your system dsn to integrated security, too !

(works on windows machines only, of course)

flo.
SilencerX at optidynamic dot com 26-Jan-2001 03:31
If like me you are using openlink from unix to access an MS Access database on an NT/Win2k machine and find out that your INSERT queries don't do anything and don't report any errors, use odbc_pconnect().

I couldn't understand what was going on and after a bit of research I found out that with MySQL they recommended using mysql_pconnect() for INSERT queries. I tried the same thing with odbc and it worked.
garretg at otable dot com 02-Jan-2001 02:03
If you're connecting to a SQL server database through ODBC, you must set the default database of the ODBC DSN to the database you want to use.

There is no way to specify the database name in odbc_connect or odbc_pconnect, just the DSN name, username, and password.
phobo_AT_paradise.net.nz 02-Nov-2000 06:01
If using Openlink to connect to a Microsoft Access database, you will most likely fine tha odbd_connect() works fine, but discover that ANY query will produce odd results; with SELECT queries failing with "[OpenLink][ODBC][Driver]Driver not capable, SQL state
S1C00 in SQLExecDirect in xxxx.php on line xx" and INSERT / DELETE queries warning "No tuples available at this result index".

In this case, use the SQL_CUR_USE_ODBC cursor!

This had me stumped for quite some time; because it was the odbc_exec() which was seemingly at fault... :)

Siggy
cnewbill at onewest dot net 18-May-2000 05:55
Alot of people share the same kind of problems getting this setup on linux.  I was assigned this problem 2 days ago and I was successful.  My combination was PHP4 RC2, Easysoft OOB, and unixODBC.  These three products work very well together and are real easy to install.  More info http://www.easysoft.com/products/oob/main.phtml. ps also works good with Perl's DBI.
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