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When to use this hack
On some hosts with restrictive settings there are limitations on PHP's filesystem functions, e.g. mkdir() etc. To be more specific, the settings are:
- safe_mode = On
- safe_mode_gid = Off
A first indication for the need of the SafeMode Hack is the encounter of error messages like this:
Writing ....../data/cache/9/9243162ecf6295fc6a1c487ca46c20fe.i failed
The directory …./data/cache/9/ will exist1) but it will not be writable by DokuWiki. This is a typical symptom of the safe mode restriction. DokuWiki can't write to directories created by it self.
Security Warning
Using this method requires your ftp password to be stored in plain text in one of DokuWiki's configuration files. These files may be world readable.
Since Release Candidate 2009-01-26 the password may be obscured2) by being uuencoded. Setting the password using the admin/config settings page will do this automatically.