<?php


// chkNull function similar to JS used in calculations
function chkNull($val) {
	return (($val !== '0' && $val !== (int)0 && $val !== (float)0
			&& ($val == '' || $val == null || $val === 'NaN' || is_nan($val) || !is_numeric($val)))
		? NAN : $val*1);
}

$arg0 = '';
$arg1 = '';

$parseVar = (((chkNull(($arg0))>0)?(1):(0))*1+1*((chkNull(($arg1))>0)?(1):(0)));

print "ParseVar: $parseVar <br>";

print "IsNumeric? " . is_numeric($parseVar) . "<br>";
print "IsNaN? " . ( is_nan($parseVar) ? 'true' : 'false') . "<br>";

$result = ((is_numeric($parseVar) && is_nan($parseVar) === false) ? $parseVar : '');

print "Result: " . $result . "<br>";



?>