Question

我想在codeigniter中设置验证规则，例如字段以字符'P'或'S'开头，否则它无效。我怎么能用Codigniter验证库做到这一点？

Test Case 1: input: A145874 ------- invalid Must start with P or S
Test Case 2: input: P258741 -------   valid
Test Case 3: input: P45KK91 ------- invalid Must not contain Letters in other positions rather the first one.
Test Case 4: input: S457821 -------   valid

Answer 1

您需要编写自定义验证规则。像这样：

public function check_first_char($str) {
    $first_char = substr($str, 0, 1);
    if ($first_char != 'P' || $first_char != 'S') {
        $this->form_validation->set_message('check_first_char', 'The %s field must begin with P or S!');
        return FALSE;
    } else {
        return TRUE;
    }
}

然后你会像这样添加验证规则：

$this->form_validation->set_rules('field_name', 'Field Name', 'callback_check_first_char');

The documentation explains it all pretty clearly

用于字符串精确匹配的Codeigniter验证

1 个答案: