What configuration option in PHP must be enabled to display errors with line numbers?

To display errors with line numbers in PHP, you need to enable the `display_errors` configuration option and set `error_reporting` to include `E_ALL` and `E_STRICT`. This will ensure that all errors, warnings, and notices are displayed along with the corresponding line numbers in your PHP scripts.

// Enable error reporting with line numbers
ini_set('display_errors', 1);
error_reporting(E_ALL | E_STRICT);