It seems like a potential bug. Since the site is not listed as suspicious, I suspect their warning system is out of sync. Alternatively, they may still be listed as infected by StopBadware which isn't as transparent.
3:17 pm on Oct 24, 2013 (gmt 0)
Check your .htaccess file for any odd additions?
4:54 pm on Oct 24, 2013 (gmt 0)
From what I can see, there is no warning any more when I do a search for site:php.net
Perhaps it was a Google glitch.
5:06 pm on Oct 24, 2013 (gmt 0)
wow...how soon corrective action seem to be taken when reported on webmasterworld!...Looks like a google spider is constantly monitoring threads here :)
6:23 am on Oct 25, 2013 (gmt 0)
Glad to be of service, php.net. ;-)
10:02 am on Oct 25, 2013 (gmt 0)
The article on El Reg suggested it was just 4 pages.
10:45 am on Oct 25, 2013 (gmt 0)
If you have been on this site in the last several days I would suggest you cut your connection to the net and do a very through investigation to your machine. [webmasterworld.com...]