Ray Chan

Results 3 issues of Ray Chan

When I pass `§` to the library, it returns UTF16 encoding which is not correct.

Add § to gsm_7bit_map and also remove backslash from it. Also fix the test which was not working correctly.

I used composer to install this and version 1.0.5 was installed. But when I looked at the source code, it does not have the [fix for `+`](https://github.com/acpmasquerade/sms-counter-php/commit/361e05eec8d047adac68af2e8860d7111c2e4572) No `43` in...