Question

我的问题是：

如何将下面的PHP数组代码转换为更灵活，精简和平均面向对象的代码？

我尝试过很多东西，包括PHP的SPL。不幸的是，我们仍在使用PHP 5.2.3，这意味着还没有几个方便的SPL功能。升级到PHP 5.3.x.不是一种选择。

// $data array that comes from a SQL result
Array
(
    [0] => Array
        (
            [parentID] => 115
            [childID] => 1718
            [some_attr] => 146
        )

    [1] => Array
        (
            [parentID] => 121
            [childID] => 1301
            [some_attr] => 105
        )

    [2] => Array
        (
            [parentID] => 121
            [childID] => 1300
            [some_attr] => 2
        )
)

使用以下代码我创建了一个这样的数组：

// $children array
Array
(
    [115] => Array
            (
                [0] => Array
                    (
                        [childID] => 1718
                        [some_attr] => 146
                    )

            )

    [121] => Array
            (
                [1] => Array
                    (
                        [childID] => 1301
                        [some_attr] => 105
                    )

                [2] => Array
                    (
                        [childID] => 1300
                        [some_attr] => 2
                    )
            )
)

上面创建父树数组的代码：

// $data array is populated from a SQL query

$children = array();

foreach ($data as $key=>$row) {
    $parent = (int)$row['parentID'];
    if( !isset($children[$parent]) ) {
        $children[$parent] = array();
    }
    // Remove parent id, because we already have it as a key in the array
    unset($row['parentID']);       
    $children[$parent][$key] = $row;
}

这是我到目前为止所提出的。

// ParentContainer
class ParentObject  {
    public $parentID;
    public $children = array();
}

// The actual tree: parent-child relationships
// parent
// |
// |___ child 1
// |___ child 2


class Tree_alpha {

    /**
     * @var int $parent  //parent is the key for this node
     */
    public $parent;

    public $parentObject;

    /* Child Nodes */
    protected $children = array();

    // Data for the node
    protected $data;

    public function __construct($parent = null, $data = null) {
        $this->parent = $parent;
        $this->data = $data;
        $this->parentObject = new ParentObject();
    }

    public function addChild($parent, $key, $data = null)  {
        if (!$this->parentObject = $this->findParent($parent) ) {
          $this->children = array();
        }
        unset($data['parentID']);
        $this->parentObject->parentID = $parent;
        $this->parentObject->children[$parent][$key] = $data;
    }

    public function findParent($parent) {
      if ($this->parentObject->parentID == $parent) {
        return $this->parentObject;
      } else {
        return new ParentObject();
      }

      //return isset($children[$parent]);
    }

}

感谢任何帮助。

PHP转换数组父树关系到Object父树关系

0 个答案: