Question

PHP初学者在这里，我试图使用下面的代码生成5个随机浮点数，然后将它们一起添加。但是，继续运行“无法重新声明”错误。任何帮助或建议？谢谢！

function RandRoll($mod1, $mod2){

    $modCalc = 1.00 + $mod1 + $mod2;
    echo "(" . $modCalc . ")"; 

    $RAND_MIN = $modCalc;
    $RAND_MAX = 100.00;


    function frand($min, $max, $decimals = 0) {
      $scale = pow(10, $decimals);
      return mt_rand($min * $scale, $max * $scale) / $scale;
    }

    $result = frand($RAND_MIN, $RAND_MAX, 2);

    return $result;
}

$moda1 = 23.45;
$moda2 = 17.21;
$score1 = RandRoll($moda1, $moda2);
$score2 = RandRoll($moda1, $moda2);
$score3 = RandRoll($moda1, $moda2);
$score4 = RandRoll($moda1, $moda2);
$score5 = RandRoll($moda1, $moda2);

echo $score1 + $score2 + $score3 + $score4 + $score5;

Answer 1

正确的缩进可帮助您调试代码

您已在函数中声明了一个函数，因此每次运行外部函数时都会尝试重新声明内部函数

将代码修改为

function frand($min, $max, $decimals = 0) {
      $scale = pow(10, $decimals);
      return mt_rand($min * $scale, $max * $scale) / $scale;
}

function RandRoll($mod1, $mod2){

    $modCalc = 1.00 + $mod1 + $mod2;
    echo "(" . $modCalc . ")"; 

    $RAND_MIN = $modCalc;
    $RAND_MAX = 100.00;

    $result = frand($RAND_MIN, $RAND_MAX, 2);

    return $result;
}

无法重新声明随机浮动错误

1 个答案: