How can one ensure they have the necessary extensions for PHP functionality?

To ensure you have the necessary extensions for PHP functionality, you can check the PHP configuration file (php.ini) to see which extensions are enabled or disabled. You can also use the PHP function `get_loaded_extensions()` to get a list of currently loaded extensions. If you need to enable a specific extension, you can do so by editing the php.ini file and uncommenting the extension you need.

// Check which extensions are currently loaded
$loadedExtensions = get_loaded_extensions();
print_r($loadedExtensions);

// Enable a specific extension in php.ini
// Uncomment the line extension=extension_name.so