Question

$arr['class'] =array("a"=>"seven","b"=>"eight","c"=>"nine");
$arr['class']['a']['dress'] ="black";
$arr['class']['b']['dress'] ="Green";
$arr['class']['c']['dress'] ="Red";

我不明白为什么它会显示“非法字符串偏移”。这是错误：警告：第32行的C：\ Users \ ASIF IQBAL \ Desktop \ RUN \ mail.php中的非法字符串偏移'dress'

警告：第33行的C：\ Users \ ASIF IQBAL \ Desktop \ RUN \ mail.php中的非法字符串偏移'连衣裙'

警告：第34行的C：\ Users \ ASIF IQBAL \ Desktop \ RUN \ mail.php中的非法字符串偏移'连衣裙'

Answer 1

$ arr ['class'] ['a']是一个字符串（5）“七”。

所以你要做的是“七”['dress']无法正常工作，因为字符串不是哈希表。

Answer 2

我很遗憾地说这里的答案是错误的。实际答案：在php中，变量可以是数组或（非数组）。例如：

$a= "555";
$a['o'] = 777;

这是错误的，因为$ a已经是非数组。如果您将删除第一行或第二行，您的代码将起作用。

在你的阵列中，同样的事情已经发生了。 $ arr ['class'] ['a']已经是非数组。所以打电话 $ arr ['class'] ['a'] ['dress']正在创建错误，因为它充当数组。我想你会明白的。祝你有美好的一天!!!!

Answer 3

$arr['class'] =array("a"=>array("seven","dress"=>"black"),
"b"=>array("eight","dress"=>"Green"),
"c"=>array("nine","dress"=>"Red")
);

您的输出将是

Array
(
    [class] => Array
        (
            [a] => Array
                (
                    [0] => seven
                    [dress] => black
                )

            [b] => Array
                (
                    [0] => eight
                    [dress] => Green
                )

            [c] => Array
                (
                    [0] => nine
                    [dress] => Red
                )

        )

)

Answer 4

你可以尝试

$arr['class']['a'][0]="seven";
$arr['class']['a']['dress'] ="black";
$arr['class']['b'][0]="eight";
$arr['class']['b']['dress'] ="green";
$arr['class']['c'][0]="nine";
$arr['class']['c']['dress'] ="red";

在下面的代码中获取错误

4 个答案: