How to change PHP version used by composer

Question

I want to use another php version on my machine than the one already installed using WAMP (2 PHP version installed).

• The composer installed uses PHP 5.6
• A new project requires PHP7.0.

Whenever I choose PHP 7 from the control panel of WAMP and then run php -v it still printing PHP5.6 (CLI)... instead of PHP7.

How can I use PHP7 without reinstalling the composer again?

Answer 1

You can change php version of composer without uninstalling it, follow these steps :

1. Search for system environment variables in cortana.
2. Click on the button "Environment variables".
3. Under "System variables" select path and click on edit, you will see one entry like this "C:wampinphpphp5.6.13".
4. Just change this to the folder name of the php located at your wamp/bin/php7.1.9, here php7.1.9 is folder name.
5. Replace php5.6.13 with bin7.1.9, it will look like these "C:wampinphpphp7.1.9", just click ok on all the boxes.
6. You are done.
7. To verify, first close all the cmd windows, than open cmd and type php -v, press enter and you should see php7.1.9.
8. If you don't see change in php version than just restart your pc and run php -v again in cmd , it will work.