Why doesn't PHP work on Open Server?

Question

PHP

Good afternoon. I want to install Composer on a local server.

Installed Atom. Installed Terminal.

In Terminal I enter the installation commands for Composer

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === 'e0012edf3e80b6978849f5eff0d4b4e4c79ff1609dd1e613307e16318854d24ae64f26d17af3ef0bf7cfb710ca74755a') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php
php -r "unlink('composer-setup.php');"

Error Response:
"php : The name 'php' is not recognized as the name of a cmdlet, function, script file, or executable. Please check the spelling of the name and the presence and correctness of the path, then try again."

As I understand it, the problem is that the program does not see PHP. But at the same time, PHP 7.1 is on the open server. I don't quite understand how this can happen.

Answer 1

Because the path to php is not in the system path.

Environment Variables button -> select Path in the new window, press Edit and add the path to php. Open terminal again and try.
Or without all this, specify the full path to php.exe in the terminal every time.