你如何将两个foreach循环合并成一个 [英] How do you combine two foreach loops into one

问题描述

这个语言是PHP。我有一个foreach（$ a为$ b）和另一个foreach（$ c为$ d => $ e）。我如何将他们结合在一起阅读。我厌倦了foreach（（$ a as $ b）&&（$ c as $ d => $ e）），但这是垃圾。 您可能对感兴趣，请点击这里 =noreferrer> SPL的MultipleIterator

例如

  // ArrayIterator只是一个例子，可以是任何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]，\\\
; 
 
 
 
 
 
 
 $ b 
  1 | 11 
 2 | 12 
 3 | 13 
 4 | 14 
 5 | 15 
 6 | 16 
  
 
The language is PHP. I have one foreach ( $a as $b) and another foreach ($c as $d => $e). How do i combine them to read as one. I tired foreach (($a as $b) && ($c as $d => $e)), but that is rubbish. 
解决方案
You might be interested in SPL's MultipleIterator

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


                        
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