Can't start server because of wrong php version

When I start my server using ./start.sh I get

Code:

PocketMine-MP requires PHP >= 7.2.0, but you have PHP 7.0.3.

When I type php -v I get

Code:

PHP 7.2.7-1+0~20180622080852.23+jessie~1.gbpfd8e2e (cli) (built: Jun 22 2018 09:18:17) ( NTS )

So I know my PHP version is above 7.2 but I still can't start my server. Anyone know what I can do?
Installing on Debian 8

 

That command will give you the version of your system PHP installation. To see the version you are using for PMMP you need to go into the PMMP PHP bin folder and type

Code:

./php -v

Which will say 7.0.3... and that's the version you need to update.