What is the WordPress `WP_Error` class and how should plugin developers use it for error propagation?

WordPress Expert Medium

WordPress Expert — Medium

What is the WordPress `WP_Error` class and how should plugin developers use it for error propagation?

Key points

  • WP_Error stores error messages and codes
  • Functions can return errors using WP_Error
  • Check errors with is_wp_error()
  • Retrieve messages with get_error_message()
  • Avoid using WP_Error for fatal errors

Ready to go further?

Related questions