private function randomSplit($num,$total,$range=1){if($num<2){return $total;}$div=array();$min=floor($total/$num-$range);$max=floor($total/$num+$range);for($i=0;$i<$num-1;$i++){$depart=mt_rand($min,$max);$div[]=$depart;$total-=$depart;}$div[]=$total;return $div;}
