Question

1. 甲型六氯环己烷

如下文所述,我通过一个阵列,根据最后的特性,即制造和开关,然后,我打造一个新阵列,并在这一新阵列中添加其最后特性,这样我就可以把这个新阵列和印刷起来,或重复这笔钱。

foreach ($answer as $value) {
  $last=substr($value,-1);
  $score=substr($value,-2,1);
  switch($last){
    case a:
      $a=array();
      array_push($a,$score);
      break;
    case b:
      $b=array();
      array_push($b,$score);
      break;
  }
}

In my html table I do this:

echo array_sum($a)

I can make it work if I add a digit like array_push($a, 2 ); but with the object it just overwrite the first one. what do I do wrong here?

Answer 1

You re clearing your arrays on every pass. Define them before the foreach loop:

$a = array();
$b = array();

foreach ($answer as $value) {
  $last=substr($value,-1);
  $score=substr($value,-2,1);
  switch($last){
    case a:
      array_push($a,$score);
      break;
    case b:

      array_push($b,$score);
      break;
  }
}

Answer 2

你每当<条码>><<>> >> 字标贴上栏时,再造一个新阵列,这意味着你从每次时间开始,基本上放弃发言之前的所有时间。 <代码>$a = 阵列()和$b = 阵列(OUTSIDE the loop,因此,各阵列仅生成一次:

$a = array();
$b = array();
foreach (...) {
   ....
}

should fix up the problem

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