Here's an easier way to find nth...
function nth($numbex){
if ($numbex%10 == 1 && $numbex%100 != 11)
$sth='st';
elseif ($numbex%10 == 2 && $numbex%100 != 12)
$sth='nd';
elseif ($numbex%10 == 3 && $numbex%100 != 13)
$sth='rd';
else $sth = 'th';
return $sth;
}
there is is no need to check if the user has entered a
non-integer as we may be using this function for expressing
variables as well eg. ith value of x , nth root of z ,etc...
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