codeigniter alpha_numeric form validation not accepting space

Question

i want to set form validation so that user cannot add special characters like $, @, &, etc... only alpha numeric characters are allow

$this->form_validation->set_rules('cat_name', 'Category Name', 'trim|xss_clean|required|is_unique[cht_category.cat_name]|min_length[5]|max_length[75]|alpha_numeric');

when i add category name with space then i get following error "The Category Name field may only contain alpha-numeric characters." when i add category name without space or single word then its working fine

Callombert · Accepted Answer · 2017-02-01 20:10:05Z

4

Use:

alpha_numeric_spaces

Ref: https://www.codeigniter.com/userguide3/libraries/form_validation.html

answered Feb 1, 2017 at 20:10

Callombert

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Comments

Community · Accepted Answer · 2017-05-23 11:46:27Z

1

Well, alpha_numeric won't allow spaces to pass. Instead of using alpha_numeric, you can write your own function and pass it there (Codeigniter form validation. Alpha and spaces):

function alpha_dash_space($str)
{
    return ( ! preg_match("/^([-a-z_ ])+$/i", $str)) ? FALSE : TRUE;
}

and then

$this->form_validation->set_rules('cat_name', 'Category Name', 'trim|xss_clean|required|is_unique[cht_category.cat_name]|min_length[5]|max_length[75]|callback__alpha_dash_space');

edited May 23, 2017 at 11:46

CommunityBot

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answered Sep 1, 2013 at 19:58

Przemysław Kalita

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1 Comment

user2715321 Over a year ago

i have tried this but it will add special charaters like business types $ now i dont want to add these kinds of characters

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