我似乎有一个无法访问的数组元素[关闭]

Question

I try to access an array element, but for some reason this gives me some trouble.

So I got this array inside $lead:

Array
(
    ["City"] => Other
    [Company Name] => 
    [Company Email] => 
    [Contact Form URL] => 
    [Comments] => 
)

And I try to access it like this:

var_dump($lead['"City"']);

But for some reason I get an undefined index error:

Notice: Undefined index: "City"

And I have no idea why that is?

EDIT:

This is the output when I use highlight_string(print_r($lead, TRUE));:

Array
(
    ["City"] => Other
    [Company Name] => 
    [Company Email] => 
    [Contact Form URL] => 
    [Comments] => 
)

Also with this code:

foreach($lead as $k => $v){
    var_dump($k);
    die();
}

I get:

string(9) ""City""

Answer 1

So thanks to the comments it seems like I got an UTF-8 BOM character (EF BB BF) at the start of my key and that is why I couldn't access it. It also seemed that Stack Overflow stripped away the character when I posted it here.

With this code:

foreach($lead as $k => $v){
    var_dump($k);
    die();
}

It showed that the key had to be 9 bytes long.

string(9) ""City""
     //↑

With the help of a hex viewer you could also see the EF BB BF character. So the solution is to use a foreach loop to get the array element or use the correct key:

foreach($lead as $k => $v){
    echo $v;
    break;
}

or

echo $lead[chr(0xEF) .  chr(0xBB) . chr(0xBF) . '"City"'];