Getting confused with empty, isset, !empty, !isset

Question

I have the following which doesn\'t work properly as $_GET[\'category\'] can also equal 0.

if ( empty( $_GET[\'category\'] ) ){
    // do something
         


        

Answer 1

Make sure the name attribute of the element that is doing get on the previous page is set, preferably to the same as its id. Then:

$category='';
if ( !isset( $_GET['category'] ) ){
    //1
} else {
    $category=$_GET['category'];
    //3
  if($category==0){
    //2
   }
}