not getting value after empty() function

Question

I'm sending a parameter with post. This parameter holds a ZERO value.

When i'm trying to use the empty method it should return 1 if the parameter is not empty and 0 if the parameter is zero.

If i'm using this code:

var_dump(empty($_REQUEST['gender_preferences']) );

i'm getting the result: 1.

If i'm using this code:

var_dump(!empty($_REQUEST['gender_preferences']) );

i'm not getting the 0 value;

Why does this happen and how can i fix it?

Answer 1

The following things are considered to be empty:

""  /* (an empty string) */
0  /* (0 as an integer)*/
"0"  /* (0 as a string)*/
NULL
FALSE
array() /*  (an empty array)*/
var $var;  /* (a variable declared, but without a value in a class)*/

Try using isset instead

isset($_REQUEST['gender_preferences'])

Answer 2

empty function Determine whether a variable is empty or not and your requested variable contains value i.e zero 0.

to check variable contains zero

if($_REQUEST['gender_preferences']){
  //value is not zero
}else{
  //value is zero
}