插入到多维数组php

Question

我尝试使用foreach循环将变量插入到数组中。这是im尝试实现的foreach循环。

foreach($rows as &$url) {
      $link = array("url");
      array_push($url, "hello World"); 
}

这就是我得到的结果。

Array
(
    [0] => Array
        (
            [cat_id] => 1
            [id] => RT
            [name] => root
            [parent] => 0
            [0] => hello World
        )

    [1] => Array
        (
            [cat_id] => 2
            [id] => CI
            [name] => Civil & Interior Works
            [parent] => 1
            [0] => hello World
        )

)

但我希望结果是这样的。

Array
(
    [0] => Array
        (
            [cat_id] => 1
            [id] => RT
            [name] => root
            [parent] => 0
            [url] => hello World
        )

    [1] => Array
        (
            [cat_id] => 2
            [id] => CI
            [name] => Civil & Interior Works
            [parent] => 1
            [url] => hello World
        )

)

如果我将变量$link = array("url");传递给array_push($link, "hello World");，则不会发生任何事情。

如果我从foreach($rows as &$url)中删除引用，循环将根本不起作用。请给我建议。

Answer 1

只需在所需的键下添加一个值：

foreach($rows as &$row) {
    $row['url'] = "hello World";
}