PHP - Get length of digits in a number

Question

I would like to ask how I can get the length of digits in an Integer. For example:

$num = 245354;
$numlength = mb_strlen($num);

$numl

Answer 1

count only integer value

  `";
        $count = 0; 
        while ($n1 != 0)  
        { 
            $n1 = $n1 / 10;
            $n1 = intval($n1);
            ++$count; 
        } 
        echo "The Digit in a Number: ".$count;
    }
    ?>`