drslump/Spec-PHP — pull request #3 by sizuhiko (2012-05-15 16:54:02+00:00)
Title: Fixed: rule of function name.

According to the manual of PHP (http://www.php.net/manual/en/functions.user-defined.php),
as a regular expression, it would be expressed thus: [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*.

Most Japanese will want to use the character within the range of \xff from \x7f.