Description:
------------
Problem using the pdo_ibm driver with PHP 5.6 and 7.

Following keywords not working with IBM i: 
"I5_ATTR_DBC_SYS_NAMING" and "I5_ATTR_DBC_CURLIB"

$db_pdo_ibm = [
'driver' => 'pdo',
'dsn' => 'ibm:E00XX73X',
'username' => strtoupper('XXXXXX'),
'password' => strtoupper('xxxxxx'),
'driver_options' => [
PDO::ATTR_AUTOCOMMIT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
PDO::ATTR_PERSISTENT => false,
//PDO::I5_ATTR_DBC_SYS_NAMING => true,
// PDO::I5_ATTR_DBC_CURLIB => '',
PDO::I5_ATTR_DBC_LIBL => 'YOURLIB',

You need to qualify the SQL statement with the schema/library to avoid "Undefined object errors" else it will use the connected User Name as the database name.



Test script:
---------------
$db_pdo_ibm = [
'driver' => 'pdo',
'dsn' => 'ibm:E00XX73X',
'username' => strtoupper('XXXXXX'),
'password' => strtoupper('xxxxxx'),
'driver_options' => [
PDO::ATTR_AUTOCOMMIT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
PDO::ATTR_PERSISTENT => false,
//PDO::I5_ATTR_DBC_SYS_NAMING => true,
// PDO::I5_ATTR_DBC_CURLIB => '',
PDO::I5_ATTR_DBC_LIBL => 'YOURLIB',