Question

基本上我有这个代码场景：

if($_SESSION['player_1_pawn'][0]['currentHealth'] <=0 && 
   $_SESSION['player_1_pawn'][1]['currentHealth'] <=0 && 
   $_SESSION['player_1_pawn'][2]['currentHealth'] <=0 && 
   $_SESSION['player_1_pawn'][3]['currentHealth'] <=0 && 
   $_SESSION['player_1_pawn'][4]['currentHealth'] <=0) {
    //some code here
}

如果所有的['player_1_pawn'][index]['currentHealth']都小于0，有没有办法检查或循环遍历所有索引，而不是逐个写入我发布了？

Answer 1

只需编写一个foreach结构，循环遍历您需要检查的所有数组元素：

$flag = true; // after the foreach, flag will be true if all pawns have <= 0 health
foreach ($_SESSION['player_1_pawn'] as $value)
{
  // for each pawn, check the current health
  if ($value['currentHealth'] > 0)
  {
    $flag = false; // one pawn has a positive current health
    break; // no need to check the rest, according to your code sample!
  }
}

if ($flag === true) // all pawns have 0 or negative health - run code!
{
  // some code here
}

Answer 2

另一个解决方案是使用array_reduce()来检查条件：

if (array_reduce($_SESSION['player_1_pawn'], function (&$flag, $player) {
    $flag &= ($player['currentHealth'] <=0);
    return $flag;
}, true));

P.S。数组$ _SESSION ['player_1_pawn']为空时要小心。

PHP - 检查三维数组中所有值的任何更短的方法？

2 个答案: