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.
On 5/25/2004 5:06 PM, Stephen Craton wrote:
I'm in a bit of a pickle. I need to find out if a variable is a perfect square or not, and this needs to test for decimal numbers as well, such as 2.25. The thing is, the only function I've found in PHP is gmp_perfect_square() which isn't supported on my web server, and I don't know how to compile the GMP code into PHP on my windows box. So, how exactly would you go about finding out if something is a perfect square or not?
Thanks,
Stephen Craton
http://www.melchior.us
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