ASIN to EAN converter tool for amazon.de

I need a simple structured PHP script that convert amazon's ASIN codes to EAN codes that needs, works with the Amazon API. The ASIN are from [login to view URL] (Germany). This a tool that make something like that: [login to view URL] but I need a mass converter tool that i can call the PHP script with the ASIN code and then the script gives me the EAN code back. example: [login to view URL] and the script gives me back: ean code 0619659077655 Thanks