致命错误：未捕获错误：无法使用标量作为数组警告
我有以下代码：
$final = [1 => 2];
$id = 1;
$final[$id][0] = 3;
该代码似乎工作正常，但我收到此警告：
警告：无法在第 X 行中将标量值用作数组（ 符合：$final[$id][0] = 3)。
谁能告诉我如何解决这个问题？
I have the following code:
$final = [1 => 2];
$id = 1;
$final[$id][0] = 3;
The code seems to work fine, but I get this warning:
Warning: Cannot use a scalar value as an array in line X (the
line with: $final[$id][0] = 3).
Can anyone tell me how to fix this?
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在向数组添加元素之前，您需要将
$final[$id]设置为数组。使用或初始化它
You need to set
$final[$id]to an array before adding elements to it. Intiialize it with eitheror
原因是因为您首先在某个地方使用普通整数或字符串声明了变量，然后尝试将其转换为数组。
The reason is because somewhere you have first declared your variable with a normal integer or string and then later you are trying to turn it into an array.
我在这方面看到的另一个问题是，当嵌套数组时，这往往会引发警告，请考虑以下事项：
上面的内容在使用时绝对可以正常工作，例如：
但下面的内容会引发警告 ::
The Other Issue I have seen on this is when nesting arrays this tends to throw the warning, consider the following:
this above will work absolutely fine when used like:
But the below will throw a warning ::
还要确保您没有将其声明为数组，然后尝试将其他内容分配给该数组，例如字符串、浮点数、整数。我有这个问题。如果你对输出进行一些回显，我第一次就会看到我想要的东西，但在另一遍相同的代码之后就不会了。
Also make sure that you don't declare it an array and then try to assign something else to the array like a string, float, integer. I had that problem. If you do some echos of output I was seeing what I wanted the first time, but not after another pass of the same code.