Natively Connect to DB2 Data in PHP

Drop the CData ODBC Driver for DB2 into your LAMP or WAMP stack to build DB2-connected Web applications. This article shows how to use PHP's ODBC built-in functions to connect to DB2 data, execute queries, and output the results.

Configure a DSN

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

Set the following properties to connect to DB2:

• Server: Set this to the name of the server running DB2.
• Port: Set this to the port the DB2 server is listening on.
• Database: Set this to the name of the DB2 database.
• User: Set this to the username of a user allowed to access the database.
• Password: Set this to the password of a user allowed to access the database.

You will also need to install the corresponding DB2 driver:

• Windows: Install the IBM Data Server Provider for .NET.

  On Windows, installing the IBM Data Server Provider is sufficient, as the installation registers it in the machine.config.

• Java: Install the IBM Data Server Driver for JDBC.

  In the Java version, place the IBM Data Server Driver JAR in the www\WEB-INF\lib\ folder for this application.

Establish a Connection

Open the connection to DB2 by calling the or methods. To close connections, use or .

$conn = odbc_connect("CData ODBC DB2 Source","user","password");

Connections opened with are closed when the script ends. Connections opened with the method are still open after the script ends. This enables other scripts to share that connection when they connect with the same credentials. By sharing connections among your scripts, you can save system resources, and queries execute faster.

$conn = odbc_pconnect("CData ODBC DB2 Source","user","password");
...
odbc_close($conn); //persistent connection must be closed explicitly

Create Prepared Statements

Create prepared statements and parameterized queries with the function.

$query = odbc_prepare($conn, "SELECT * FROM Orders WHERE ShipCity = ?");

Execute Queries

Execute prepared statements with .

$conn = odbc_connect("CData ODBC DB2 Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Orders WHERE ShipCity = ?");
$success = odbc_execute($query, array('New York'));
 

Execute nonparameterized queries with .

$conn = odbc_connect("CData ODBC DB2 Source","user","password");
$query = odbc_exec($conn, "SELECT Orders.Freight, Customers.ContactName FROM Customers INNER JOIN Orders ON Customers.CustomerId=Orders.CustomerId");
 

Process Results

Access a row in the result set as an array with the function.

$conn = odbc_connect("CData ODBC DB2 data Source","user","password");
$query = odbc_exec($conn, "SELECT Orders.Freight, Customers.ContactName FROM Customers INNER JOIN Orders ON Customers.CustomerId=Orders.CustomerId");
while($row = odbc_fetch_array($query)){
 echo $row["OrderName"] . "\n";
}

Display the result set in an HTML table with the function.

$conn = odbc_connect("CData ODBC DB2 data Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Orders WHERE ShipCity = ?");
$success = odbc_execute($query, array('New York'));
if($success)
 odbc_result_all($query);

More Example Queries

You will find complete information on the driver's supported SQL in the help documentation. The code examples above are DB2-specific adaptations of the PHP community documentation for all ODBC functions.