Best way to check for positive integer (PHP)?

Question

I need to check for a form input value to be a positive integer (not just an integer), and I noticed another snippet using the code below:

$i = $user_input_v         


        

Answer 1

Rather than checking for int OR string with multiple conditions like:

if ( ctype_digit($i) || ( is_int($i) && $i > 0 ) )
{
    return TRUE;
}

you can simplify this by just casting the input to (string) so that the one ctype_digit call will check both string and int inputs:

if( ctype_digit( (string)$i ) )
{
    return TRUE;
}