这里还有其他一些关于替换多维数组中的值的问题，但是我没有发现关于我正试图做的事情的确切信息。
我有一个从API获得的数组，在将API有效负载发送到浏览器之前，我需要根据数组树中的其他值更新一些值。
在数组中，当sale[0] === true时，我正在寻找某种逻辑，然后将[price][0]值替换为相应的新售价。
使用foreach，我可以轻松地遍历数组中的每个节点，但是我不确定一旦遍历数组后，如果/当销售节点==时，如何用新价格更新原始数组= true。
Array
(
[response] => Array
(
[0] => Array
(
[results] => Array
(
[0] => Array
(
[items] => Array
(
[0] => Array
(
[id] => Array
(
[0] => 846471605959
)
[title] => Array
(
[0] => Test Item 846471605959
)
[imageURL] => Array
(
[0] => https://foo/bar/images/846471605959.jpg
)
[itemURL] => Array
(
[0] => https://foo/bar/item/846471605959
)
[price] => Array
(
[0] => 799.00
)
[sale] => Array
(
[0] => true
)
)
[1] => Array
(
[id] => Array
(
[0] => 414953260545
)
[title] => Array
(
[0] => Test Item 414953260545
)
[imageURL] => Array
(
[0] => https://foo/bar/images/414953260545.jpg
)
[itemURL] => Array
(
[0] => https://foo/bar/item/414953260545
)
[price] => Array
(
[0] => 199.00
)
[sale] => Array
(
[0] => false
)
)
[2] => Array
(
[id] => Array
(
[0] => 684865199812
)
[title] => Array
(
[0] => Test Item 684865199812
)
[imageURL] => Array
(
[0] => https://foo/bar/images/684865199812.jpg
)
[itemURL] => Array
(
[0] => https://foo/bar/item/684865199812
)
[price] => Array
(
[0] => 699.00
)
[sale] => Array
(
[0] => false
)
)
[3] => Array
(
[id] => Array
(
[0] => 987800965761
)
[title] => Array
(
[0] => Test Item 987800965761
)
[imageURL] => Array
(
[0] => https://foo/bar/images/987800965761.jpg
)
[itemURL] => Array
(
[0] => https://foo/bar/item/987800965761
)
[price] => Array
(
[0] => 499.00
)
[sale] => Array
(
[0] => true
)
)
[4] => Array
(
[id] => Array
(
[0] => 005457536677
)
[title] => Array
(
[0] => Test Item 005457536677
)
[imageURL] => Array
(
[0] => https://foo/bar/images/005457536677.jpg
)
[itemURL] => Array
(
[0] => https://foo/bar/item/005457536677
)
[price] => Array
(
[0] => 99.00
)
[sale] => Array
(
[0] => false
)
)
)
)
)
}
)
)
将参考变量用于foreach迭代变量，然后可以就地更新元素。