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Fatal error: Undefined class constant ‘MYSQL_ATTR_INIT_COMMAND’

This error occurs when you are using PDO to connect with MySQL database server and pdo_mysql extension is not enabled/installed in your server.

Solution:

if you are working in localhost or dedicated server then you cab enable pdo_mysql extension yourself. You can enable this extension from php.ini file. Generally in linux system  php.ini file is path is : /etc/php5/apache2/php.ini.

To enable pdo_mysql extension in shared hosting serve you need to contact hosting server support.

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