在 PHP 中搜索多维数组并返回键

Question

我面临以下问题：我已经建立了一个代表“图标库”的网站。它基本上显示了包含图标附加属性的 CSV 文件的内容，例如

• 文件名
• 工具提示
• 标签
• 状态（完成，进行中）
• 文件类型
  • png
    • 在目录中找到文件名
  • 每股收益
    • 在目录中找到文件名
  • ico
    • 在目录中找到文件名
  • ...

最后一切都放入一个大数组中：

[390] => Array
    (
        [0] => hammer
        [1] => Properties
        [2] => tools, hammer, properties
        [3] => 
        [4] => done
        [png] => Array
            (
                [0] => hammer_16x.png
                [1] => hammer_32x.png
            )

        [eps] => Array
            (
                [0] => hammer_16x.eps
                [1] => hammer_32x.eps
            )

        [ico] => Array
            (
                [0] => hammer.ico
            )

    )

现在我想提供在这个数组中搜索并根据搜索结果过滤网站上显示的内容的可能性。因此，我想至少搜索以下字符串：

 [0] => hammer
 [1] => Properties
 [2] => tools, hammer, properties
 [3] => 
 [4] => done

任何提示我该怎么做？ 非常感谢！

Answer 1

您可以将array_filter 与array_diff_assoc 结合使用。 有点像这样：

function filter($array, $filter_elem) {
    return array_filter($array, function ($v) use($filter_elem) {
        return count(array_diff_assoc($filter_elem, $v)) == 0;
    });
}

$array = array(
    '390' => array(
        '0' => 'hammer',
        '1' => 'Properties',
        '2' => 'tools, hammer, properties',
        '3' => false,
        '4' => 'done',
        'png' => array(
            '0' => 'hammer_16x.png',
            '1' => 'hammer_32x.png',
        ),
        'eps' => array(
            '0' => 'hammer_16x.eps',
            '1' => 'hammer_32x.eps',
        ),
        'ico' => array(
            '0' => 'hammer.ico',
        ),
    ),
    ...
);

$filter_elem = array(
    '1' => 'Properties',
    '2' => 'tools, hammer, properties',
    '3' => false,
    '4' => 'done',
);

print_r(filter($array, $filter_elem));

Demo

Answer 2

一种优雅且可重复使用的方式。

实施：

class FilterableArrayCollection implements ArrayAccess
{
    /**
     *    The original $data from your array it contains the $items to be sorted.
     * The items in this array are sorted in the original order you received/read
     * them in.
     */
    protected $data  = array();

    /**
     *    A hash structured as key/subkeys/items
     * - the key is an index name -- the name of a property you have in each item
     *   from the original data;
     * - the subkeys are the value of the property from each item;
     * - the items are variable references to items who respect the rule
     *   $item[$key] === $subkey
     */
    protected $index = array();

    public function __construct(array $data = array())
    {
        $this->data = $data;
    }

    public function findBy($filter, $value, $isUnique = true)
    {
        if (!isset($this->index[$filter]) {
            foreach ($this->data as $item) {
                $currentValue = $item[$filter];

                if ($isUnique) {
                    $this->index[$filter][$currentValue] = &$item;
                } else {
                    $this->index[$filter][$currentValue][] = &$item;
                }
            }
            ksort($this->index[$filter]);
        } else {
            return($this->index[$filter][$value]);
        }
    }

/*
 * Implement ArrayAccess interface here
 */
}

示例：

$data = array(
    array(
        'filename' => 'hammer',
        'tooltip' => 'Properties',
        'tags' => 'tools, hammer, properties',
        'state' => 'done',
        'filetypes' => array(
            'png' => array(
                'hammer_16x.png',
                'hammer_32x.png'
            ),
            'eps' => array(
                'hammer_16x.eps',
                'hammer_32x.eps'
            ),
            'ico' => array(
                'hammer.ico'
            )
        )
    ),
    array(
        'filename' => 'hammer',
        'tooltip' => 'not-Properties',
        'tags' => 'tools, hammer, properties',
        'state' => 'in progress',
        'filetypes' => array(
            'png' => array(
                'hammer_16x.png',
                'hammer_32x.png'
            ),
            'eps' => array(
                'hammer_16x.eps',
                'hammer_32x.eps'
            ),
            'ico' => array(
                'hammer.ico'
            )
        )
    )
);

$x = new FilterableArrayCollection($data);
$filtered = $x->findBy('state', 'done');
var_dump($filtered);

/**
array(
        'filename' => 'hammer',
        'tooltip' => 'Properties',
        'tags' => 'tools, hammer, properties',
        'state' => 'done',
        'filetypes' => array(
            'png' => array(
                'hammer_16x.png',
                'hammer_32x.png'
            ),
            'eps' => array(
                'hammer_16x.eps',
                'hammer_32x.eps'
            ),
            'ico' => array(
                'hammer.ico'
            )
        )
    )
 */