入门问题。初始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
))
如何用foreach或其他方式重建它？是否有要重新生成数组的函数？
Array
(
[textkey] => text
[file] => file.txt
[anotherkey] => another text
[file] => file2.xml
[text_success] => Success
[newfile] => scope.txt
)
这是您可能需要的代码，其中$array=到上面指定的数组。
$newArray = [];
foreach($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。为了解决这个问题，您可以为文件密钥分配一个简单的数组，文件名如下：
$newArray = [];
foreach($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
)
没有预制函数，只需创建一个新数组来保存在第一个级别上迭代的结果，然后用foreach提取第二个级别的键和值。有几种方法可以做到这一点，但这通常是我的做法。
$NewArray = array();
for($i = 0; $i <= count($ExistingArray); $i++){
foreach($ExistingArray[$i] as $key => $val){
$NewArray[$key] = $val;
}
}