converting to php 7.

You'd have to check all your other dependancies to see if PHP 7.1 will work with them. If this is a new project then you'd probably be okay.

We'd need a lot more information to advise properly though.

There are many more things you will need to check before doing that. Because it may affect your application. Which laravel version you are currently working on? Some of the server information will be good as well like, Is there any other application is running on your server.

What's your environment right now? If you used homestead for dev this would be very simple to test, since it includes php 5.6, 7.0, 7.1 and 7.2 out of the box. You'd just tell that site to use 7.1 in the homestead config and test it. Create a new git branch and use/test that package.

hmmm ... these are the stuff that I know:

laravel version 5.4.28

I'm using a local server mySQL

.....

I've searched for how to update php. why does it looks complicated?

@vmitchell85 @SaquibRizwan @Cronix

@msyaukat faustbrian/laravel-commentable, this package using some php 7.1 functionality thats why it requires php 7.1..

if u r insist on using this package, i would recommend upgrade to php 7.1, this might gives u error that display in your page or stop accessing it..