PHP: Stripped MotD support

[ldilley]

Proposed Changes

• Increment version to 2.2.0.
• Fix protocol detection.
• Add stripped motd support for PHP implementation (related to Accommodate extra field in MotD data returned in JSON responses #84).

[AppVeyorBot]

✅ Build minestat 1.0.0.78 completed (commit 4dadc0dfe6 by @ldilley)

[mindsolve]

Hi @ldilley,

I found a few problems with the changes here:

1. The json SLP protocol doesn't imply that as JSON-MOTD is used, the old format aka. a string in the description field is still valid and used by some servers (such as Hypixel):

   {
       "description": "             \u00a7aHypixel Network  \u00a7c[1.8-1.17]\n          \u00a75\u00a7lSKYBLOCK CRYSTAL HOLLOWS!"
   }

   That is the reason for my why I check the type of the passed data (object/dict vs string) in my implementations. If something like this is possible in PHP, you could completely remove the parameter to the strip_motd function.

2. The field extra is optional in a json Chat object (example: any vanilla mc server)

   {
       "description": {"text":"This is MC \"1.16\" \u00a79\u00a7oT\u00a74E\u00a7r\u00a7lS\u00a76\u00a7o\u00a7nT"}
   }

Best regards,
~MindSolve

[ldilley]

The Ruby implementation is going to exhibit similar symptoms then under the same condition (pointing at the equivalent server). This will need to be addressed in both languages.

[ldilley]

PR #93 now exists to resolve the PHP issues. It was tested against both Hypixel and Mineplex. I'll await your review prior to merging.