Lost carradio security code

[Blackvette]

Hi everyone, need some help please as the car battery was disconnected in the workshop and as a concequence the radio is useless and requires the security code. It's a Philips 22dc594/35E in my Citroen XM V6. The numbers on the sticker are: PHB2000920. !st barcode: 90222159435200 and the 2nd barcode reads: 00195132000920. On it's back there is another barcode: 326005.
Really hope someone can help as the steering wheel controls are specificaly for this redio.
Many thanks, Mat