How can I verify if PDO is correctly configured and functional for MySQL in my PHP environment?

Testing PDO Availability in PHP

Query:

How can one ascertain whether PDO is properly configured and functional for MySQL utilization within a PHP environment?

Response:

PDO is an integral component of PHP 5.1 and above, so its availability is guaranteed. However, you can verify the presence of specific database drivers using phpinfo(). Alternatively, you can employ specific constants to check for specific drivers, such as:

<code class="php">var_dump(defined(PDO::MYSQL_ATTR_LOCAL_INFILE)); // mysql
var_dump(PDO::FB_ATTR_TIME_FORMAT)); // firebird</code>

It's important to note that not all drivers have defined constants, making phpinfo() the most comprehensive solution.

To check from the command line, execute the following:

$ php -m

You can also use these alternatives to phpinfo():

<code class="php">extension_loaded ('PDO' ); // returns boolean
// or
extension_loaded('pdo_mysql');
// or get all extensions and search for a specific one
get_loaded_extensions(); </code>

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