Codeigniter form validation. Alpha and spaces

Question

When using Codeigniter form validation, does alpha allow spaces? Ex. \"Bob Smith\"

Answer 1

You can use

$field = trim($_POST['field']);
$_POST['field'] = str_replace(' ', '', $_POST['field']);

and check it as alpha in the rule, then you can use $field after successful validation.

$this->form_validation->set_rules('field', 'FIELD', 'alpha');