PHP generates WeChat red envelopes

/** * @param $total [total amount of red packets you want to send] * @param int $num [send several] * @return array[generate red envelope amount] */function getredgift ($total, $num = ten) {
  $min = 0.01;    $wamp = Array ();    $returnData = Array ();    for ($i = 1; $i < $num, + + $i) {        $safe _total = ($total-($num-$i) * $min)/($num-$i);        _total < 0) break;        $money = @mt_rand ($min *, $safe _total * 100)/100;//randomly generates a red envelope amount        $total = $total-$money;//The total amount of the remaining red packets        $wamp [$i] = Round ($money, 2);//reserved two valid digits    }    $wamp [$i] = Round ($total, 2);    $returnData [' moneysum '] = $wamp;    $returnData [' newtotal '] = array_sum ($wamp);    return $returnData;} Test $data = Getredgift (1),;p Rint_r ($data),//result:/*array ([+] = 8.7 [2] = 10.09 [3] = = 6.23 [4] = = 6. [5] = = 0.47 [6] = 3.12 [7] = 7.52 [8] = = 12.21 [9] = 20.53 [ten] = 24.26) */

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