PHP, Smarty，如何从多维数组获取值

Question

我有一个多维数组，像这样:

Array (7)
    0 => Array (6)
      id => "31"
      link => "http://site.loc/index.php?id_categor..."
      name => "Gotowe"
      desc => ""
      id_parent => "28"
      children => Array (5)
            0 => Array (6)
                  id => "152"
                  link => "http://site.loc/index.php?id_categor..."
                  name => ""
                  desc => ""
                  id_parent => "31"
                  children => Array (0)
            1 => Array (6)
                  id => "153"
                  link => "http://site.loc/index.php?id_categor..."
                  name => ""
                  desc => ""
                  id_parent => "31"
                  children => Array (0)
            2 => Array (6)
                  id => "154"
                  link => "http://site.loc/index.php?id_categor..."
                  name => ""
                  desc => ""
                  id_parent => "31"
                  children => Array (0)
            3 => Array (6)
                  id => "155"
                  link => "http://site.loc/index.php?id_categor..."
                  name => ""
                  desc => ""
                  id_parent => "31"
                  children => Array (0)
            4 => Array (6)
                  id => "156"
                  link => "http://site.loc/index.php?id_categor..."
                  name => ""
                  desc => ""
                  id_parent => "31"
                  children => Array (0)
    1 => Array (6)
          id => "42"
          link => "http://site.loc/index.php?id_categor..."
          name => "Moda"
          desc => ""
          id_parent => "28"
          children => Array (6)
            0 => Array (6)
                id => "89"
                link => "http://site.loc/index.php?id_categor..."
                name => "SUKIENKI"
                desc => ""
                id_parent => "42"
                children => Array (0)
                {.....}

然后，在smarty中，我有:

{section name = "foo" loop = $node.children}
    {if $node.children[id_parent] == currentCategoryId}
        <li><p><span><a href = "{$node.children.children.link|escape:'htmlall':'UTF-8'}"  title="{$child.children.desc|escape:'htmlall':'UTF-8'}">{$node.children.children.name|escape:'htmlall':'UTF-8'}</a></span></p></li>
    {/if}
{/section}

关键是，我需要从数组中获得所有链接，其中id_parent等于currentCategoryId。更准确地说，当我在与id = 42(它在数组代码的底部)类别的页面上，我需要得到所有的链接，从它并放在页面上。我尝试了一些{foreach}，但它不起作用，所以现在我尝试{section}，它也不能正常工作。我被卡住了，你能帮我吗?

Answer 1

您使用了错误的访问循环元素，$currentCategoriId应该在$的开头。

循环应该像这样:

{section name = "foo" loop = $node.children}
    {if $node.children[foo].id_parent == $currentCategoryId}
        <li><p><span><a href = "{$node.children[foo].link|escape:'htmlall':'UTF-8'}"  title="{$node.children[foo].desc|escape:'htmlall':'UTF-8'}">{$node.children[foo].name|escape:'htmlall':'UTF-8'}</a></span></p></li>
    {/if}
{/section}

对于这样的PHP数据:

$data =     Array (
'children' => array(
0 => array (
    'id' => "152",
         'link' => "http://site.loc/index.php?id_categor...",
         'name' => "aaa",
          'desc' => "a desc",
          'id_parent' => "31",
),
1 => array (
    'id' => "22152",
    'link' => "22http://site.loc/index.php?id_categor...",
    'name' => "bbb",
    'desc' => "b desc",
    'id_parent' => "3122",
),
1 => array (
    'id' => "3322152",
    'link' => "3322http://site.loc/index.php?id_categor...",
    'name' => "ccc",
    'desc' => "c desc",
    'id_parent' => "31",
)
));
$smarty->assign('node',$data);
$smarty->assign('currentCategoryId',31);

我得到想要的输出:

<li><p><span><a href = "http://site.loc/index.php?id_categor..."  title="a desc">aaa</a></span></p></li>
                <li><p><span><a href = "3322http://site.loc/index.php?id_categor..."  title="c desc">ccc</a></span></p></li>

下次请在我的回答中提供PHP格式的数据。这样测试就容易多了。

编辑

因为你没有提供PHP格式的样本数据，所以很难测试它，也不知道你从PHP分配给Smarty的是什么，但我想这应该适合你:

{section name = "foo" loop = $node}
    {section name="bar" loop=$node[foo].children}
    {if $node[foo].children[bar].id_parent == $currentCategoryId}
        <li><p><span><a href = "{$node[foo].children[bar].link|escape:'htmlall':'UTF-8'}"  title="{$node[foo].children[bar].desc|escape:'htmlall':'UTF-8'}">{$node[foo].children[bar].name|escape:'htmlall':'UTF-8'}</a></span></p></li>
    {/if}
    {/section}
{/section}

Answer 2

currentCategoryId可能被视为字符串而不是变量，在其前面加一个美元符号