Get the number of monthly searches for specific keywords using some API for Laravel 5.* (PHP)

I found several similar questions:

• here
• here
• and here

I, however, don't really understand the Google Adwords API and I am a little lost.

All I need is to send a word and get its monthly/yearly searches.

Can you please provide me with some sample code snippets or github packages for this?

via Chebli Mohamed