Unexpected ? in Laravel

So, I'm on vacation and wanted to work a little bit on a project I'm trying to wrap up.

I bring my project on a separate drive, install it in my WAMP directory and go to run "php aristan migrate" and this is what I get:

brucegust@BRUCEGUST7EFC MINGW64 /c/wamp64/www/new_nomas (bruce)
$ php artisan migrate

Parse error: syntax error, unexpected '?' in C:\wamp64\www\new_nomas\vendor\lara
vel\framework\src\Illuminate\Foundation\helpers.php on line 500

brucegust@BRUCEGUST7EFC MINGW64 /c/wamp64/www/new_nomas (bruce)
$ php -v
PHP 5.6.40 (cli) (built: Jan  9 2019 15:10:36)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies

brucegust@BRUCEGUST7EFC MINGW64 /c/wamp64/www/new_nomas (bruce)
$ php artisan laravel

Parse error: syntax error, unexpected '?' in C:\wamp64\www\new_nomas\vendor\laravel\framework
\src\Illuminate\Foundation\helpers.php on line 500

Select all Open in new window

I'm running PHP 7 on my box. The Laravel project I'm working on is also coming from a PHP 7 dynamic, so I don't know where the PHP 5.6.4 is coming from, but from what I've been able to determine, the error that I'm getting is because of PHP mismatch.

How do I fix it?