ATOM-Settings: IDE-PHP could not launch your PHP runtime: how to proceed ?

hi there good day dear folks,

i am currently workin on a script: therefore i have to take care that the PHP-development-Environment is set up correctly:

so this is a question regarding: ATOM-Settings: IDE-PHP could not launch your PHP runtime: how to proceed

i just installed into ATOM the

  • IDE-PHP
    and i followed the recommendation:
    > You should also install the atom-ide-ui package to expose the functionality within Atom.

so i also installed the atom-ide-ui

Now - i got back the complains from the system:
No PHP interpreter found at php .
If you have PHP 7.0 installed please Set PHP Path correctly. If you do not please Download PHP 7.0 or later and install it.
spawn php ENOENT
IDE-PHP could not launch your PHP runtime.
No PHP interpreter found at php .

well - i just need to install PHP - and set the paths
btw: are there some other nice and easy leightweight IDEs or Editors for PHP!? Love to hear from you.