This driver provides a connection to IBM DB2 Databases, using the IBM Data Client. This driver replaces the original DB2 ODBC driver.

PHP 7 and 8 drivers for windows are currently available here

 $db->uCaseTables = true/false;

This variable sets the keys in metaColumns,metaPrimaryKeys and metaForeignKeys to upper-case when retrieved. The default is true.

$mt = $db->getMetaColumns('ACT');
print_r($mt);
 
$db->uCaseTables = false;
$mt = $db->getMetaColumns('ACT');
print_r($mt);

This is a simple example building a catalogued connection from a windows client to a remote DB2 server running on a machine named adodb-db2.local. The server is running on port 25010. We will add a DSN entry called adodb-test

db2cli writecfg add -database SAMPLE -host adodb-db2.local -port 25010 
db2cli writecfg add -dsn adodb-test -database SAMPLE -host adodb-db2.local -port 25010

To use this DSN

include '../adodb/adodb.inc.php';
$dsn = 'adodb-test';
$user = 'db2inst1';
$password = 'instance';
$conn = ADOnewConnection('db2');
$conn->connect($dsn, $user, $password);

include '../adodb/adodb.inc.php';
$dsn = 'hostname=adodb-db2.local;protocol=tcpip;port=25010;database=SAMPLE;uid=db2inst1;pwd=instance';
$conn = ADOnewConnection('db2');
$conn->connect($dsn);

include '../adodb/adodb.inc.php';
$dsn = 'hostname=adodb-db2.local;protocol=tcpip;port=25010;database=SAMPLE;uid=db2inst1;pwd=instance';
$conn = ADOnewConnection('db2');
$conn->connect($dsn);
 
/*
* Add another connection
*/
$dsn = '*LOCAL';
$conn2 = ADOnewConnection('db2');
$conn2->connect($dsn);
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This driver re-maps ibm :0 bind variables to oracle compatible ? variables. Use this driver to enhance compatiblity between Oracle and DB2 drivers.

The driver is deprecated. To write portable code that uses bind parameters and can be shared between DB2 and Oracle, use the param() method.

This driver provides undocumented bind variable mapping from ibm to oracle.The functionality appears to overlap the db2_oci driver

Unlike most DBMS, DB2 provides complete control over the casing of table and column names. This means, for example, that the tables ACCOUNTS, accounts and Accounts can exist simultaneously in the same database.

In normal usage, table and column names can be searched in a case insensitive manner. That insensitivity always applies precedence to the upper case table name. In this example, 2 tables exist: ACCOUNTS and accounts.

$sql = 'SELECT * FROM ACCOUNTS';
 
$sql = 'SELECT * FROM accounts';
 
/*
* Both of these queries will query the ACCOUNTS table
*/

In order to query the accounts table, it will be necessary to modify the SQL statement, using double quotes

$sql = 'SELECT * FROM "accounts"'

The following order of query precedence applies:

1. If a single table name exists in a database, the table can be queried in any way as long as the table name is not quoted
2. If a single table name exists in a database, a query must match the casing of the name if the query table name is quoted
3. If multiple tables with the same name apply, any unquoted query will search a table name with upper casing, no matter how the query table name is constructed.

Any table name containing special characters will need to be quoted in all queries.