Scott Forstie mention your DB2 Express C installed on Linux tweet this morning.
PHP ibm_db2 (test new features): IBM currently testing some new Open Source PHP ibm_db2 technology allows many/most IBM i settings over DB2 Connect V10.5 from Linux. If you are interested see the following Web site http://youngiprofessionals.com/wiki/index.php/XMLSERVICE/PHP , download section PHP ibm_db2 new features (test only), download test ibm_db2.zip file. To compile into your Linux machine PHP see README_IBM_i zip file, section called 'linux for IBM i people'.
DB2 Connect V10.5 (with DB2 for i features): DB2 Connect V10.5 is a licensed program product that needs to be purchased. For production usage, the DB2 Connect Unlimited Edition for System i packaging typically offers the best terms for IBM i customers. Contact your local IBM representative or business partner for pricing information. For more information on this product, see the following Web site: http://www-03.ibm.com/software/products/en/db2connunlieditforsysti. A trial DB2 Connect license file for evaluation purposes can be obtained by sending an email to: rmahendr@us.ibm.com