组合来自具有相同结构的 CSV 文件的 2D 数组 [重复]

Question

我正在尝试添加两个数组 $arraydata1 和 $arraydata2 以获取数组 $result。但它显示的结果好像$result=$arraydata1;，而不是 $result=$arraydata1+$arraydata2;.

这是我从 CSV 文件中获取它并将其存储在不同的数组类型变量中后尝试添加的数组。

$result = array();
$arraydata1 = array();
$arraydata2 = array();
$key1 = array("itemid","itembrand","itemname","itemmodel","itemdesc","itemtype","itemprice","itemimgfolder","itemimage");
$key2 = array("itemid","itembrand","itemname","itemmodel","itemdesc","itemtype","itemprice","itemimgfolder","itemimage");
foreach (file('data/dell/data.csv') as $key => $str)
{
    if ($key == 0) continue;  // to skip headings of the csv file
    $values = str_getcsv($str, "\t", '', '');
    $arraydata1[] = array_combine($key1, $values);
} // to store first array data

foreach (file('data/hp/data.csv') as $key => $str)
{
    if ($key == 0) continue;  // to skip headings of the csv file
    $values = str_getcsv($str, "\t", '', '');
    $arraydata2[] = array_combine($key2, $values);
}

$result = $arraydata2+$arraydata2; // result the combination of the two arrays

其他一切正常。我也试过array_combine()，但也没用。

Answer 1

正如可能的重复评论所暗示的那样，我认为答案是使用array_merge 而不是+，但为什么不将它们全部存储在同一个数组中呢？

$keys = array("itemid","itembrand","itemname","itemmodel","itemdesc","itemtype","itemprice","itemimgfolder","itemimage");

$files = array('data/dell/data.csv', 'data/hp/data.csv');

foreach ($files as $file) {
    foreach (file($file) as $key => $str) {
        if ($key == 0) continue;  // to skip headings of the csv file
        $values = str_getcsv($str, "\t", '', '');
        $result[] = array_combine($keys, $values);
    }
}