PHP Extensions “0” must be loaded Magento
While installing the Magentos 18.104.22.168 I got this error even I installed the php5-mysql and all dependency.
To solve the issue follow the given below steps.
Step 1 : Edit line no. 72 in app/code/core/Mage/Install/etc/config.xml and search keyword pdo_mysql
Note: It should be in extension tag
And write like this as given below
See the below given screeshot