Under "Environmental checks" on the installer:
- Basic checks are performed to see if this environment is suitable for MediaWiki installation. You should provide the results of these checks if you need help during installation.
- PHP 5.3.1 is installed.
- Warning: SQLite is compiled without the FTS3 module, search features will be unavailable on this backend.
- PHP $1 is not compatible with MediaWiki due to a bug involving reference parameters to __call().
I think $1 should actually be a version number :)
Version: 1.18.x
Severity: minor