codeigniter验证仅在电子邮件ID数组不为空时才有效

Question

I am doing codeigniter validation for email id. I have declared 3 text box for entering email id. I am retrieving all the 3 email id's in array called ref_email. now I want to do email id validation only when email id text boxes are not empty and show error message in view page. if email id text boxes are empty, then i don't want to do any validation. I don't know where i have done mistake in my code.

My controller code:

    $ref_email_array=$this->input->post('ref_email');

            foreach($ref_email_array as $key => $r_email ){
        if ($r_email!="") {
                $this->form_validation->set_rules('ref_email['.$key.']', 'Email','trim|valid_email');
                $this->form_validation->set_error_delimiters('<div class="error_user" style="color:red">', '</div>');
                }
            }
           if($this->form_validation->run()){   // insertion code }

can anybody help me? thanks in advance.

Answer 1

$ref_email_array=$this->input->post('ref_email');
foreach($ref_email_array as $r_email ){
if (empty($r_email)) {}
else  {
$this->form_validation->set_rules('ref_email['.$key.']','Email','trim|valid_email');
$this->form_validation->set_error_delimiters('<div class="error_user" style="color:red">', '</div>');
      }
 }

I hope this might help you ! , it works for me