Hi Ron,
Thanks for using Syncfusion Products.
We have installed Xampp 7.0.22 and created php sample. Kanban sample working fine and without showing any errors. You can place the attached sample into your Xampp server and host the php sample.
If still you are facing any issue, please provide more details (like your code or reproduce your issue on the attached sample) regarding your issue. So that we can check and provide appropriate solutions.
Regards,
Buvana S.