PHP implements lucky red envelope function

/** * php拼手气红包函数 * @param int $fee 红包总金额 * @param int $c 发给多少人 * @return array */ function RedEnvelope($fee,$c){ $fee = 100; $n = $fee/2; for($i=0;$i<$c;$i++){ if($i==($c-1)){ $arr[]=$fee; }else{ $arr[]=$j=rand(0.01,$n)+rand(11,99)/100; $fee = $fee-$j; $n = $fee/4; } } return $arr; } //使用示例 $arr=RedEnvelope(100,10); print_r($arr); $z =0; foreach($arr as $v){ $z +=$v; echo $v."+"; } echo "=",$z;