sudo gedit ~/.local/share/applications/xampp-control-panel.desktop

[Desktop Entry]
Comment=Start and Stop XAMPP
Name=XAMPP Control Panel
Exec=sudo -i python /opt/lampp/share/xampp-control-panel/xampp-control-panel.py
Icon=/usr/share/icons/Humanity/devices/24/network-wired.svg
Encoding=UTF-8
Terminal=false
Name=XAMPP Control Panel
Comment=Start and Stop XAMPP
Type=Application
Icon=/usr/share/icons/Humanity/devices/24/network-wired.svg

sudo apt-get install gksu