Hi!
Currently dots and spaces are converted to underscores when pulling them in
from HTML:
<!-- php will only see two submitted values, b/c of mangling -->
<input type='file' name='file5.1' />
<input type='file' name='file5 1' />
<input type='file' name='file5_1' />
<input type='text' name='file5.1' />
<input type='text' name='file5 1' />
<input type='text' name='file5_1' />
Ostensibly[1], names were mangled to support import_request_variables and
register_globals. But curiously other characters that would create an
invalid variable aren't mangled:
<input type='text' name='file5$1' /> <!-- why not mangle $ also? -->
There are already two bug requests out there asking to remove this behavior
or expose the original name: #34882 and #42055
Since 5.4.0 removed both import_request_variables and register_globals,
does this mangling serve any purpose? If not, can we remove it?
[1] http://php.net/manual/en/language.variables.external.php
[2] https://bugs.php.net/bug.php?id=34882
[3] https://bugs.php.net/bug.php?id=42055
