Online PHP editor | refs for RGDi3

<?php /** * Returns N±(0~n/m) randomness * * @param $n int Base number * @param $m int Fraction of number to use for random/ * * @return float */ function addRandomToN($n, $m) { $plus = mt_rand(0,1); if ($plus) { return $n + (($n/$m) * rand0To1()); } return $n - (($n/$m) * rand0To1()); } function rand0To1() { return (float)rand()/(float)getrandmax(); } echo addRandomToN(5, 0.1);