Topic on Project:Support desk

After upgrading apache and php to latest version ( on ubuntu 12.04 ), I got this error "Fatal exception of type MWException"

detail:

[9ce78d3a] /wiki/index.php/%D8%B5%D9%81%D8%AD%D9%87%D9%94_%D8%A7%D8%B5%D9%84%DB%8C Exception from line 797 of /var/www/wiki/includes/db/Database.php: DatabaseBase::factory no viable database extension found for type 'mysql'

Backtrace:

1. 0 /var/www/wiki/includes/db/LoadBalancer.php(730): DatabaseBase::factory(string, array)
2. 1 /var/www/wiki/includes/db/LoadBalancer.php(606): LoadBalancer->reallyOpenConnection(array, boolean)
3. 2 /var/www/wiki/includes/db/LoadBalancer.php(493): LoadBalancer->openConnection(integer, boolean)
4. 3 /var/www/wiki/includes/GlobalFunctions.php(3649): LoadBalancer->getConnection(integer, array, boolean)
5. 4 /var/www/wiki/includes/cache/LocalisationCache.php(1071): wfGetDB(integer)
6. 5 /var/www/wiki/includes/cache/LocalisationCache.php(397): LCStore_DB->get(string, string)
7. 6 /var/www/wiki/includes/cache/LocalisationCache.php(440): LocalisationCache->isExpired(string)
8. 7 /var/www/wiki/includes/cache/LocalisationCache.php(324): LocalisationCache->initLanguage(string)
9. 8 /var/www/wiki/includes/cache/LocalisationCache.php(259): LocalisationCache->loadItem(string, string)
10. 9 /var/www/wiki/languages/Language.php(4122): LocalisationCache->getItem(string, string)
11. 10 /var/www/wiki/languages/Language.php(238): Language::getFallbacksFor(string)
12. 11 /var/www/wiki/languages/Language.php(197): Language::newFromCode(string)
13. 12 /var/www/wiki/includes/Setup.php(537): Language::factory(string)
14. 13 /var/www/wiki/includes/WebStart.php(153): require_once(string)
15. 14 /var/www/wiki/index.php(46): require(string)
16. 15 {main}

You need to install and enable the MySQL driver. On Ubuntu, this is:

 sudo apt-get install php5-mysql

Ubuntu respond, php5-mysql is already the newest version.

I tried install libapache2-mod-auth-mysql, I got this:

The following packages have unmet dependencies:

libapache2-mod-auth-mysql : Depends: apache2.2-common (>= 2.2.3-3) but it is not going to be installed

help please

To resolve this issue, you do not need to install libapache2-mod-auth-mysql.

Try

 sudo php5enmod mysql
 sudo service apache2 restart

Thanks It worked! What does that command do?

php5enmod and service apache2 restart.