Configurable execution of PHP scripts in Windows

php.cmd

@echo off
if "%PHP%"=="" (
	echo %%PHP%% is NOT defined 
	exit /b
) 
%PHP% %*

register.cmd

assoc .php=phpfile
ftype phpfile="C:\Tools\php.cmd" -f "%1" -- %~2
assoc .phar=pharfile
ftype pharfile="C:\Tools\php.cmd" -f "%1" -- %~2
setx /m PATHEXT %PATHEXT%;.PHP;.PHAR

Run register.cmd as administrator in a prompt to register php files to be executed with php.cmd. Change environment variable %PHP% to whatever php version you need to run, e.g. SET PHP=php-7.4. Now you can run php files as any other executable.

If you need access to php in your command line just put php.cmd somewhere in your %PATH%.