Question

初学者问题。最初的php数组是多维的，里面有数组。看一看。

    Array
    (
[0] => Array
    (
        [textkey] => text
        [file] => file.txt
    )

[1] => Array
    (
        [anotherkey] => another text
        [file] => file2.xml
    )

[2] => Array
    (
        [text_success] => Success
        [newfile] => scope.txt
    ))

如何使用foreach或其他方式重建它？是否有任何重建数组的函数？

Array
(
[textkey] => text
[file] => file.txt
[anotherkey] => another text
[file] => file2.xml
[text_success] => Success
[newfile] => scope.txt
)

Answer 1

这是您可能需要的代码$array =您在上面指定的数组。

$newArray = [];

foreach($array as $segment) {
    foreach($segment as $key => $value) {
        $newArray[$key] = $value;
    }
}

print_r($newArray);

这是输出：

Array
(
    [textkey] => text
    [file] => file2.xml
    [anotherkey] => another text
    [text_success] => Success
    [newfile] => scope.txt
)

但是，有一个问题。两个file键都没有显示，因为单个键不能在数组中多次使用。要解决该问题，您可以使用如下文件名将简单数组分配给文件密钥：

$newArray = [];

foreach($array as $segment) {
    foreach($segment as $key => $value) {
        if($key == 'file') {
            $newArray['file'][] = $value;   
        } else {
            $newArray[$key] = $value;
        }
    }
}

print_r($newArray);

这给出了输出：

Array
(
    [textkey] => text
    [file] => Array
        (
            [0] => file.txt
            [1] => file2.xml
        )

    [anotherkey] => another text
    [text_success] => Success
    [newfile] => scope.txt
)

Answer 2

没有预制功能，但只需创建一个新数组来保存迭代在第一级上的结果，然后用foreach拉出第二级的键和值。有几种方法可以做到这一点，但这通常是我如何去做的。

$NewArray = array();
for($i = 0; $i <= count($ExistingArray); $i++){
   foreach($ExistingArray[$i] as $key => $val){
        $NewArray[$key] = $val;
   }
}

php数组来自多维数组键值

2 个答案: