Executing webp-express wp cli command via php

My hosting (OVH) only allows commands without spaces, and with less than 100 characters. So I can’t just write php wp-cli.phar webp-express convert etc… since it has spaces, and it’s longer than 100 charaters (see attached screenshot).

Can I work around the problem by using the webp-express command in a php file? So I will just put the path with the php file with the command in it (eg: mypath/cron/cron.php)