Question

我的var_dump $info看起来像这样：

array(4) {
    [0]=> string(5) "dummy"
    [1]=> array(5) { [0]=> string(8) "Karaffen" [1]=> string(16) "Ã–l auf Leinwand" [2]=> string(11) "83 x 120 cm" [3]=> string(3) " - " [4]=> string(1) "1" }
    [2]=> array(5) { [0]=> string(6) "SantÃ©" [1]=> string(16) "Ã–l auf Leinwand" [2]=> string(11) "80 x 100 cm" [3]=> string(3) " - " [4]=> string(1) "1" }
    [3]=> array(5) { [0]=> string(11) "Landleben I" [1]=> string(16) "Ã–l auf Leinwand" [2]=> string(11) "70 x 100 cm" [3]=> string(3) " - " [4]=> string(1) "1" }
}

我希望通过此访问权限：echo $info[1][0];但回显始终为NULL。怎么了？

以下是完整的代码：

$info = array();


$info[0]  = "dummy";

$info[1] = array();
$info[1][0] = "Karaffen";
$info[1][1] = "Öl auf Leinwand";
$info[1][2] = "83 x 120 cm";
$info[1][3] = " - ";
$info[1][4] = "1";

$info[2] = array();
$info[2][0] = "Santé";
$info[2][1] = "Öl auf Leinwand";
$info[2][2] = "80 x 100 cm";
$info[2][3] = " - ";
$info[2][4] = "1";

$info[3] = array();
$info[3][0] = "Landleben I";
$info[3][1] = "Öl auf Leinwand";
$info[3][2] = "70 x 100 cm";
$info[3][3] = " - ";
$info[3][4] = "1";


$numFiles = count($info);
echo $numFiles." sind da<br>\r\n";

var_dump($info[1]);


$t = "<br>\r\n";  $i = 0;
echo $t."here: ";
echo $info[1][2];
echo " END";

Answer 1

它应该工作。我使用答案来格式化代码，这不在评论中：

$info = array(
    "dummy",
    array("Karaffen", "Ã–l auf Leinwand", "83 x 120 cm", " - ", "1"),
    array("SantÃ©", "Ã–l auf Leinwand", "80 x 100 cm", " - ", "1"),
    array("Landleben I", "Ã–l auf Leinwand", "70 x 100 cm", " - ", "1")
);
var_dump($info[1][0]);
echo ($info[1][0]);

输出：

string 'Karaffen' (length=8)
Karaffen

Answer 2

代码没有错误，所以这应该有效：

$info = array("dummy",
            array("Karaffen", "Ã–l auf Leinwand", "83 x 120 cm", " - ", "1"),
            array("SantÃ©", "Ã–l auf Leinwand", "80 x 100 cm", " - ", "1"),
            array("Landleben I", "Ã–l auf Leinwand", "70 x 100 cm", " - ", "1")
        );


echo $info[1][0];

输出：

Karaffen

在PHP中访问多维数组

2 个答案: