比较不同条目的多维数组并存储它们

Question

我正在尝试自学多维数组的工作原理以及如何在 php 中比较和操作它们 我创建了两个具有相同方案但每个值不同的数组。

第一个数组

      $datastuff1 = array( array(  Ttitle => "rose", 
                            Price => 1.25,
                            Number => 15 
                            ),
                     array( Ttitle => "daisy", 
                            Price => 0.75,
                            Number => 25
                           ),
                     array( Ttitle => "lilly", 
                            Price => 1.75,
                            Number => 3
                           ),
                     array( Ttitle => "orchid", 
                            Price => 1.15,
                            Number => 7 
                        )
                     );

第二个数组

     $datastuff2 = array( array(  Title => "rose", 
                            Price => 1.25,
                            Number => 15 
                            ),
                     array( Title => "daisy", 
                            Price => 0.75,
                            Number => 25
                           ),
                     array( Title => "nettle", 
                            Price => 2.75,
                            Number => 33
                           ),

                     array( Title => "orchid", 
                            Price => 1.15,
                            Number => 7 
                        )
                     );

我现在想循环遍历两个数组和foreach 两个数组中匹配的项目（使用标题作为键）添加到一个新的匹配数组，并且对于两个数组中不匹配的每个项目都添加到我的数组不匹配

这是我的代码

    $matchingarray = array();
    $notmatchingarray = array();

    foreach($datastuff1 as $data1){
        foreach($datastuff2 as $data2){
           if($data2['Title']== $data1['Ttitle'])
           {
              $matchingarray[] = $data1;
           }
        else {
        $notmatchingarray[] = $data1;
            }
        }
    } 

但是当我使用

输出数组的内容时

   echo "<pre>";
   print_r($notmatchingarray);
   echo "</pre>"; 

我得到输出

    Array
    (
     [0] => Array
     (
        [Ttitle] => rose
        [Price] => 1.25
        [Number] => 15
    )

   [1] => Array
    (
        [Ttitle] => rose
        [Price] => 1.25
        [Number] => 15
    )

   [2] => Array
    (
        [Ttitle] => rose
        [Price] => 1.25
        [Number] => 15
    )

   [3] => Array
    (
        [Ttitle] => daisy
        [Price] => 0.75
        [Number] => 25
    )

  [4] => Array
    (
        [Ttitle] => daisy
        [Price] => 0.75
        [Number] => 25
    )

   [5] => Array
    (
        [Ttitle] => daisy
        [Price] => 0.75
        [Number] => 25
    )

  [6] => Array
    (
        [Ttitle] => lilly
        [Price] => 1.75
        [Number] => 3
    )

  [7] => Array
    (
        [Ttitle] => lilly
        [Price] => 1.75
        [Number] => 3
    )

  [8] => Array
    (
        [Ttitle] => lilly
        [Price] => 1.75
        [Number] => 3
    )

  [9] => Array
    (
        [Ttitle] => lilly
        [Price] => 1.75
        [Number] => 3
    )

  [10] => Array
    (
        [Ttitle] => orchid
        [Price] => 1.15
        [Number] => 7
    )

  [11] => Array
    (
        [Ttitle] => orchid
        [Price] => 1.15
        [Number] => 7
    )

  [12] => Array
    (
        [Ttitle] => orchid
        [Price] => 1.15
        [Number] => 7
    )

    )   

所以在我看来，它好像循环了三遍（匹配的项目数量），每次都将匹配的项目放入数组中。

我想要的是非匹配数组中不匹配的所有项目（使用标题作为键）以及匹配数组中匹配的项目。我想我遗漏了一些非常明显的东西。

任何帮助都会很重要 考虑迈克

Answer 1

我不能简单地复制/粘贴您的数组定义，所以我没有进行测试，但是您需要检查是否相等，如果发现则 break 退出内部循环。另外，在内循环之后，检查它是否被添加到$matchingarray，如果没有，添加到$notmatchingarray：

foreach($datastuff1 as $key => $data1){
    foreach($datastuff2 as $data2){
        //match add to $matchingarray
        if($data2['Title'] == $data1['Ttitle']) {
            $matchingarray[$key] = $data1; //use $key so we can check later
            break; //we have a match so why keep looping?
        }
    }
    //if no match add to $notmatchingarray
    if(!isset($matchingarray[$key])) { //we used $key so we can check for it
        $notmatchingarray[$key] = $data1; //don't need $key here but oh well
    }
}

可能更容易遵循的替代方法：

foreach($datastuff1 as $key => $data1){
    $match = false; //no match

    foreach($datastuff2 as $data2) {
        //match add to $matchingarray
        if($data2['Title'] == $data1['Ttitle']) {
            $matchingarray[] = $data1;
            $match = true; //match
            break; //we have a match so why keep looping?
        }
    }
    //if no match add to $notmatchingarray
    if(!$match) {
        $notmatchingarray[] = $data1;
    }
}