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!