Online PHP editor | refs for usfV6

<?php echo purebell(0, 3, 3); function purebell($min,$max,$std_deviation,$step=1){ $rand1 = (float)mt_rand()/(float)mt_getrandmax(); $rand2 = (float)mt_rand()/(float)mt_getrandmax(); $gaussian_number = sqrt(-2 * log($rand1)) * cos(2 * M_PI * $rand2); $mean = ($max + $min) / 2; $random_number = ($gaussian_number * $std_deviation) + $mean; $random_number = round($random_number / $step) * $step; if($random_number < $min || $random_number > $max){ $random_number = purebell($min, $max,$std_deviation); } return $random_number; }