php: '0' as a string with empty()

Question

I want a 0 to be considered as an integer and a \'0\' to be considered as a string but empty() considers the \'0\' as a string in the example below,

$var = \         


        

Answer 1

If you want skip empty $filter and dont skip $filter = '0' and others values

$filter = ''; //or $filter = '0'; or $filter = '1';

//trim the $filter

if( isset($filter) and ( $filter != '' or $filter == '0') ) {

//$filter data 

};