Validating for negative integer values

is there a function similiar to all the is_ ones that would validate if a variable is a negative or positive integer? I tried the following for the same effect, but no luck with it:

"bds":4,

if(strpos(strval($v[bds]),'-') === false) { echo "is negative"; }

Is there a reason you can't use:

if ($v[bds] < 0) { echo "is negative"; }

You could use the is_int to test that its an integer and then just check its less than 0


if(is_int($v[bds]) && $v[bds]<0)) { echo "nagative integer"; }


but is_int does validate if a variable is a negative or positive integer

How about:

if(is_int(abs($v[bds])) && $v[bds]<0)) { echo "nagative integer"; }

Take the absolute value of the input first to determine if it is an integer...