codeguy/php-the-right-way — pull request #435 by GeertDD (2014-09-15 18:34:27+00:00)
Title: Add meta charset in head

The HTTP Content-Type header has precedence but adding a meta charset in the head helps when opening an offline (e.g. downloaded) file in the browser.

Also, note that the official character set name is in uppercase.
See: http://www.iana.org/assignments/character-sets/character-sets.xhtml