如何将两个 foreach 循环合并为一个

语言是PHP。我有一个 foreach （ $a as $b ）和另一个 foreach （ $c as $d => $e ）。我如何将它们结合起来作为一个整体来阅读。我厌倦了 foreach (($a as $b) && ($c as $d => $e))，但那是垃圾。

您可能感兴趣SPL 的多重迭代器

e.g.

// ArrayIterator is just an example, could be any Iterator.
$a1 = new ArrayIterator(array(1, 2, 3, 4, 5, 6));
$a2 = new ArrayIterator(array(11, 12, 13, 14, 15, 16));

$it = new MultipleIterator;
$it->attachIterator($a1);
$it->attachIterator($a2);

foreach($it as $e) {
  echo $e[0], ' | ', $e[1], "\n";
}

prints

1 | 11
2 | 12
3 | 13
4 | 14
5 | 15
6 | 16