One more simple and lazy Google (tm) hacking:
try to google:
inurl:"info.php" filetype:php allow_url_fopen https
or
inurl:"info.php" filetype:php intitle:"phpinfo()"
Found:
about 282,000 results (0.22 seconds)
So, today we have quarter of a million careless developers :-)
Have a nice day, folks :-)