[PHP] Re: Perfect Squares

[Jason Barnett]

John Kaspar wrote:

Try taking the square root of the variable
$sqrt = sqrt($var);

then compare the number of decimal places.
if (strlen(strstr($sqrt,".")) <= strlen(strstr($var,"."))) {
    // perfect
}

Just guessing of course.

I'd do something similar, but a little different:

$sqrt = sqrt($var);
if ($var == $sqrt * $sqrt) {
  // perfect
}

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php