如何解决这个问题：使用未定义的常量slug-假定为“slug”

Question

我把我的超文本标记语言网站变成了一个PHP网站。然而，我目前处于测试阶段，我一直在渲染页面上获得“通知”，而不是内容。

我试着用$将常量转换为变量，但仍然出现了提示。但是，它从未定义的常量变为未定义的变量。我把它们改回常量。

我在WinXP 32位，因此，我使用Xammp 1.8.2和PHP 5.4.31

有问题的数组：

    $navItems = array(
                      array(
                              slug => "index.php",
                              title => "Home"
                            ),
                      array(
                              slug => "about.php",
                              title => "About Me"
                            ),
                      array(
                              slug => "portfolio.php",
                              title => "Portfolio"
                            ),
                      array(
                              slug => "contact.php",
                              title => "Contact"
                            )
        );

我希望看到实际的页面内容。然而，我得到：

注意：在C:\xampp\htdocs\zmglobal-it中使用未定义的常量slug-假定为“slug”。通用域名格式。php\包含\数组。php在线5

注意：在C:\xampp\htdocs\zmglobal it中使用未定义的常量title-假定为“title”。通用域名格式。php\包含\数组。php第6行

Answer 1

必须引用键值，以便使用“keyname”或“keyname”

''' { $navItems = array( array( "slug" => "index.php", "title" => "Home", ), array( "slug" => "about.php", "title" => "About Me", ), array( "slug" => "portfolio.php", "title" => "Portfolio", ), array( "slug" => "contact.php", "title" => "Contact", ) ); } '''

Answer 2

您的阵列看起来很棒，您可能只需要稍微修改一下，然后在某些需要的地方添加“或”，例如：

$navItems = array(
    array(
        "slug" => "index.php",
        "title" => "Home",
    ),
    array(
        "slug" => "about.php",
        "title" => "About Me",
    ),
    array(
        "slug" => "portfolio.php",
        "title" => "Portfolio",
    ),
    array(
        "slug" => "contact.php",
        "title" => "Contact",
    ),
);

或者可能：

$navItems = [
    [
        "slug" => "index.php",
        "title" => "Home",
    ],
    [
        "slug" => "about.php",
        "title" => "About Me",
    ],
    [
        "slug" => "portfolio.php",
        "title" => "Portfolio",
    ],
    [
        "slug" => "contact.php",
        "title" => "Contact",
    ],
];

var_dump($navItems);

这是var_dump（$navItems）的输出 ：

array(4) {
  [0]=>
  array(2) {
    ["slug"]=>
    string(9) "index.php"
    ["title"]=>
    string(4) "Home"
  }
  [1]=>
  array(2) {
    ["slug"]=>
    string(9) "about.php"
    ["title"]=>
    string(8) "About Me"
  }
  [2]=>
  array(2) {
    ["slug"]=>
    string(13) "portfolio.php"
    ["title"]=>
    string(9) "Portfolio"
  }
  [3]=>
  array(2) {
    ["slug"]=>
    string(11) "contact.php"
    ["title"]=>
    string(7) "Contact"
  }
}