[pmwiki-users] GoDaddy Issues with PmWiki
5ko at 5ko.fr
Sun Aug 18 18:03:20 CDT 2013
There is a good news and a bad news. Tamara, thanks for letting me test the
server in realtime.
Good news: there is an easy temporary solution: create a file index.php
containing this line:
<?php include_once("pmwiki.php"); # See PmWiki.Installation
Then call your wiki with the index.php file instead of pmwiki.php.
Bas news: that server just hangs if some content is posted by the author,
and if in the script there is the expression "preg_replace(.../e".
In PHP 5.4, the use of the eval /e parameter in preg_replace was deprecated
but not removed. It appears that many hosting providers decided to block
that function even in PHP 5.3, and PmWiki and other PHP software rely
heavily on it.
On the server I tested, it is probably done on the server side, not by the
PHP interpreter, because it doesn't hang if the "/e" part is in a variable
$rx = "/.../e";
$z = preg_replace($rx, $y, $z);
It also doesn't seem to check the content of included files, that's why the
trick with index.php works (for now).
While the temporary solution may work for you now, in the future it may stop
working. There are many other hosting providers where the function works
correctly, but how can we be sure that it will work in the future?
On other servers the PHP interpreter blocks the function so there is no way
to "trick" it.
Tamara Temple writes:
> I've just upgraded the GD web host I have access to from 5.2 (!?!) to 5.3
> (?!!?) — it will take a bit for it to activate. SSH access is not enabled on
> this account, and it would cause a change in the DNS, which I'm not in
> control of, and the people whom actually own the account are busy with other
> things, so I can't offer that. I can offer FTP access, however. This is a
> super clean install of pmwiki experiencing the errors (only changed
> WikiTitle and DefaultPasswords) so it should be a decent test bed.
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