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?

1) what is a ZERO value 2) "should return 1 if the parameter is not empty" - huh? doesn't that contradict its name LOL 3) it's unclear what you actually want to do. — Karoly Horvath
– Karoly Horvath, Commented Mar 5, 2014 at 9:41

NoobEditor · Accepted Answer · 2014-03-05 09:43:20Z

5

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'])

edited Mar 5, 2014 at 9:43

NoobEditor

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answered Mar 5, 2014 at 9:41

SajithNair

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2 Comments

Karoly Horvath Over a year ago

how can you suggest isset without knowing what he wants to do? that's quite irresponible.

SajithNair Over a year ago

Read the question clearly, he describes what he wants.

vimal · Accepted Answer · 2014-03-05 09:47:27Z

0

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
}

answered Mar 5, 2014 at 9:47

vimal

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1 Comment

Karoly Horvath Over a year ago

just.... don't. check the last column: us3.php.net/manual/en/types.comparisons.php

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