I have installed XAMPP in Endless 3.1.8 (eos-170520-022531) without any problem, you should download the .run from the web https://www.apachefriends.org/xampp-files/7.1.7/xampp-linux- X64-7.1.7-0-installer.run
After downloading you must follow the following steps:
1- chmod 755 xampp-linux–installer.run
2- sudo ./xampp-linux–installer.run
That is all. XAMPP is now installed in the / opt / lampp directory
