There is 2 way to Integrate a biometric attendance device in php website.

Option 1 Via Desktop Application
for this you need to develop desktop application using biometric device SDK (Software Development Kit) that application will collect row data from biometric device and store it in local database (SQL Database or Access Database) in that 2nd stage this application will automatically push that data to web application via PHP REST API and you will get your biometric data to PHP website.

Option 2 Via Push Data Service
for this you Require below things
1- Internet Connection in Biometric Device Via LAN cable or Via Wi-Fi Connection
2- Dedicated or Virtual Window or Linux Server
3- Expert Developer who already done this kind of task earlier (You can contact Global Gym Software for this)
4- Biometric Device That Come with Push Data Technology

in this case you just need to configure web application in Dedicated or Virtual Server and Need to Configure in Biometric Device Web Server IP Address and Port and you will get all row data in web application database.