Fix issues reported by PHPCS

Patch created

Since, @kkalashnikov provided a patch, moving it to 'Needs Review'

checked patch #5 it's apply cleanly and remove all PHPCS issue

As requested in #4, please remove (or explain) the proposed changes to the README.

Splitting commands into multiple lines is not an improvement. Those are instructions meant to be copied; by reformatting them to follow a fixed line length, you are making documentation WORSE in order to satisfy a lint check.

This has too much out of scope change included. The unserialize changes make sense. The rest is just noise and will make it hard to re-roll other patches. If we want to open up a new ticket w/ only the unserialize changes, please do that. Thanks for your contributions.