JSON unexpected token error (PHP json_encode & jsonlint.com)

Question

{"cover":"http:\/\/files.domain.com\/some_file\/1234.jpg_thumb.png"}

This is my JSON code and when I tries to parse, it returns Unexpected Token error. I checked on http://jsonlint.com/ but it didn't go well.

I used php json_encode function to encode JSON.

++ update It works fine when I copy JSON string and paste it in Notepad or other plain text editors and re-copy that. I think it must be some encoding error or something. I'll try.

Answer 1

I Fixed it. It was very simple to find out; I captured packet and view hex, and there's other byte in json. My php file encoding was UTF-8 with BOM! I simply converted it to utf-8 without bom, and all is well.