oxk4r

Hi. I have a doubt with the proper way of sanitize the forms with php. In the php form validation lesson https://www.w3schools.com/php/php_form_validation.asp is used a function for this purpose:

function test_input($data) {
  $data = trim($data);
  $data = stripslashes($data);
  $data = htmlspecialchars($data);
  return $data;
}

But in the filters lesson, https://www.w3schools.com/php/php_filter.asp I understand that filters can do the same task. Is this correct? Are two approaches valid? Which one should be used nowadays?

Thanks in advance!