How to Fix \"PDOException: could not find driver\" in Symfony2?

PDOException "could not find driver" in PHP

When attempting to create a schema with the Symfony2 command:

php app/console doctrine:schema:create

You may encounter the error message:

PDOException “could not find driver”

Despite uncommenting the line extension=php_pdo_mysql.dll in the php.ini file, the issue persists. Additionally, running php -m yields the following warnings:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/mysql.so' - /usr/lib/php5/20090626+lfs/mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/mysqli.so' - /usr/lib/php5/20090626+lfs/mysqli.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/pdo_mysql.so' - /usr/lib/php5/20090626+lfs/pdo_mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0

Solution:

For Ubuntu systems, execute the following command in the console:

sudo apt-get install php5-gd php5-mysql

This command will install the necessary PHP modules, and the issue should be resolved.

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