Question

我有一个正在循环遍历数组的foreach，然后我从foreach中提取出该数组的信息。我需要将这些信息放入一个单独的空数组中。我有工作，有点儿。这是我的代码：

newArray = array();
foreach ($result as $value) {
    newArray[] = $value['sample1'];
    newArray[] = $value['sample2'];
    newArray[] = $value['sample3'];
}
print_r(newArray);

这将打印一个类似于：

的关联数组

{
    0: "1",
    1: "1",
    2: "blah",
    3: "etc through as many values as I have",
}

相反，我需要让它形成一个看起来像这样的数组：

{
    0: {
        0: "1",
        1: "1",
        2: "blah"
    },
    1: {
        0: "etc"
    }
}

关于如何创建新的多维数组的任何建议？

Answer 1

构建一个包含所需原始部分的临时数组，然后将该临时数组添加到newArray中，如下所示

foreach ($result as $value) {
    $t = [ $value['sample1'], $value['sample2'], $value['sample3'] ];
    $newArray[] = $t;
}

或者您使用的是旧的PHP

foreach ($result as $value) {
    $t = array( $value['sample1'], $value['sample2'], $value['sample3'] );
    $newArray[] = $t;
}

或简写

foreach ($result as $value) {
    $newArray[] = [ $value['sample1'], $value['sample2'], $value['sample3'] ];
}

和旧的PHP

foreach ($result as $value) {
    $newArray[] = array( $value['sample1'], $value['sample2'], $value['sample3'] );
}

Answer 2

使用$newArray[]时，每次都会在数组中创建一个新项目。你可以试试这个：

foreach ($result as $key => $value) {
    $newArray[$key][] = $value['sample1'];
    $newArray[$key][] = $value['sample2'];
    $newArray[$key][] = $value['sample3'];
}
print_r($newArray);

Answer 3

foreach ($result as $value) {
    $newArray[] = [
      $value['sample1'],
      $value['sample2'],
      $value['sample3']
    ];
}

循环遍历foreach并将该foreach中的元素放入新的多维数组中

3 个答案: