Can I use this software with PHP and MYSQL database?
It's not clear whether is supports PHP and MYSQL databases or not. The discussion is raised on various forums but the PHP/MYSQL was mentioned in another context.
You can download the manuals for the SDKs to find out more about it using the following link: http://www.crossmatch.com/support/reference-material/
Aditionally, contact the developers directly at http://www.crossmatch.com/Contact_Form/