What steps can be taken to ensure that error messages are displayed consistently across different PHP environments?

In order to ensure that error messages are displayed consistently across different PHP environments, it is important to set the error reporting level and display errors directive in the PHP configuration file. By explicitly defining these settings, you can ensure that error messages are displayed consistently regardless of the server environment.

// Set error reporting level
error_reporting(E_ALL);

// Display errors
ini_set('display_errors', 1);