validation is a small php validation lib for mysql databases.
install once with composer:
composer require itsharks/validation
then add this to your project:
require_once "vendor/autoload.php";
$validation = new \Itsharks\Validation\validation();
/* required */
$validation->input("inputname")->required();
/* email */
$validation->input("inputname")->email();
/* min */
$validation->input("inputname")->min(number);
/* max */
$validation->input("inputname")->max(number);
// show errors
$validation->showErorr();
// is error
$validation->is_error();
// case
$validation->input("inputname")->required()->min(2)->max(10);
$validation->showErorr();
if($validation->is_error()){
// statement
}