CodeIgniter validation errors

form_validation_lang.php

<?php
/**
 * CodeIgniter
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 * An open source application development framework for PHP
 *
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 * @package	CodeIgniter
 * @author	EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
 * @copyright	Copyright (c) 2019 - 2022, CodeIgniter Foundation (https://codeigniter.com/)
 * @license	https://opensource.org/licenses/MIT	MIT License
 * @link	https://codeigniter.com
 * @since	Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

$lang['form_validation_required']		= 'The {field} field is required.';
$lang['form_validation_isset']			= 'The {field} field must have a value.';
$lang['form_validation_valid_email']		= 'The {field} field must contain a valid email address.';
$lang['form_validation_valid_emails']		= 'The {field} field must contain all valid email addresses.';
$lang['form_validation_valid_url']		= 'The {field} field must contain a valid URL.';
$lang['form_validation_valid_ip']		= 'The {field} field must contain a valid IP.';
$lang['form_validation_valid_mac']		= 'The {field} field must contain a valid MAC.';
$lang['form_validation_valid_base64']		= 'The {field} field must contain a valid Base64 string.';
$lang['form_validation_min_length']		= 'The {field} field must be at least {param} characters in length.';
$lang['form_validation_max_length']		= 'The {field} field cannot exceed {param} characters in length.';
$lang['form_validation_exact_length']		= 'The {field} field must be exactly {param} characters in length.';
$lang['form_validation_alpha']			= 'The {field} field may only contain alphabetical characters.';
$lang['form_validation_alpha_numeric']		= 'The {field} field may only contain alpha-numeric characters.';
$lang['form_validation_alpha_numeric_spaces']	= 'The {field} field may only contain alpha-numeric characters and spaces.';
$lang['form_validation_alpha_dash']		= 'The {field} field may only contain alpha-numeric characters, underscores, and dashes.';
$lang['form_validation_numeric']		= 'The {field} field must contain only numbers.';
$lang['form_validation_is_numeric']		= 'The {field} field must contain only numeric characters.';
$lang['form_validation_integer']		= 'The {field} field must contain an integer.';
$lang['form_validation_regex_match']		= 'The {field} field is not in the correct format.';
$lang['form_validation_matches']		= 'The {field} field does not match the {param} field.';
$lang['form_validation_differs']		= 'The {field} field must differ from the {param} field.';
$lang['form_validation_is_unique'] 		= 'The {field} field must contain a unique value.';
$lang['form_validation_is_natural']		= 'The {field} field must only contain digits.';
$lang['form_validation_is_natural_no_zero']	= 'The {field} field must only contain digits and must be greater than zero.';
$lang['form_validation_decimal']		= 'The {field} field must contain a decimal number.';
$lang['form_validation_less_than']		= 'The {field} field must contain a number less than {param}.';
$lang['form_validation_less_than_equal_to']	= 'The {field} field must contain a number less than or equal to {param}.';
$lang['form_validation_greater_than']		= 'The {field} field must contain a number greater than {param}.';
$lang['form_validation_greater_than_equal_to']	= 'The {field} field must contain a number greater than or equal to {param}.';
$lang['form_validation_error_message_not_set']	= 'Unable to access an error message corresponding to your field name {field}.';
$lang['form_validation_in_list']		= 'The {field} field must be one of: {param}.';