使用自定义算法

Question

我创建了一个名为 HTMLElement 的自定义类。

class HTMLElement
{
private $name;
private $value;

function __construct($name,$value) {
    $this->name = $name;
    $this->value = $value;
}

public function getName(){
    return $this->name;
}

public function setName($name){
    $this->value = $name;
}

public function getValue(){
    return $this->value;
}

public function setValue($value){
    $this->value = $value;
}

public static function ConvertToHTMLElement(HTMLElement $obj){
    return new HTMLElement($obj->name,$obj->value);
}

}

现在我想创建一个关联数组，使用属性 $ name 作为键， $ value 作为值。

$ value 可能包含字符串或数组或HTMLElement对象类型

这是我将我的价值传递给我的算法的地方。

$tree = new HTMLTree();
$newArr = $tree->ConvertToArray(new HTMLElement(
"table", (array(
     new HTMLElement("tr", array(
        new HTMLElement("td", "Name"),
        new HTMLElement("td", "Age"),
        new HTMLElement("td", "City")
    )
)
))));

这是我的算法

class HTMLTree
{

public function ConvertToArray($htmlElement){
    if(is_array($htmlElement)){
        $arr =array();

        foreach ($htmlElement as $singleElement){
            $arr = $this->Convert($arr,$singleElement);
        }
        return $arr;
    }else{
        return $this->Convert(array(),$htmlElement);
    }

}

private function Convert($arr,HTMLElement $element){;
    $name = $element->getName();
    $value = $element->getValue();

    if(is_string($value)){
        $arr =array(array_merge(array($name=>$value)));
        return $arr;
    }else if(is_array($value)){
        foreach ($value as $elem){
           $arr = array_merge($arr,$this->Convert($arr,$elem));
        }
        return array($name=>($arr));
    }
    else if(is_object($value)){
        $arr = array_merge(array($name => $this-
>Convert($arr,$value)));

    }
    return $arr;
}
}

问题是我得到如下输出

而我想要的输出是这个

算法在哪里出错了？

更新

新的HTML树

$tree = new HTMLTree();
        $newArr = $tree->ConvertToArray(new HTMLElement(
            "table", array_merge(
                array(
                    new HTMLElement("tr", array(
                        new HTMLElement("th", "Name"),
                        new HTMLElement("th", "Age"),
                        new HTMLElement("th", "City")
                        )
                    ),
                    new HTMLElement("tk", array(
                        new HTMLElement("th", "Name"),
                        new HTMLElement("th", "Age"),
                        new HTMLElement("th", "City")
                        )
                    )
            )
        )));

更新2

$tree = new HTMLTree();
$newArr = $tree->ConvertToArray(new HTMLElement(
    "table",
    array(
        new HTMLElement("tr", array(
                new HTMLElement("th", "Name"),
                new HTMLElement("th", "Age"),
                new HTMLElement("th", "City")
            )
        )
    ,
        new HTMLElement("tr", array(
                new HTMLElement("td", "sjs"),
                new HTMLElement("td", "sss"),
                new HTMLElement("td", "ddd")
            )
        )

)));

预期的数组结构

Array (
    [table] => Array (
            [0] => Array (
                    [tr] => Array (
                            [0] => Array (
                                    [td] => Name
                                )
                            [1] => Array (
                                    [td] => Age
                                )
                            [2] => Array (
                                    [td] => City
                                )
                        )
                )
                [1] => Array (
                    [tk] => Array (
                            [0] => Array (
                                    [td] => Name
                                )
                            [1] => Array (
                                    [td] => Age
                                )
                            [2] => Array (
                                    [td] => City
                                )
                        )
                )
        )
)

Answer 1

在array_merge之后，你必须将数组包装成与其他数据一致。

private function Convert($arr, HTMLElement $element){
    $name = $element->getName();
    $value = $element->getValue();

    if(is_string($value)){
        $arr = array(array_merge(array($name=>$value)));
        return $arr;
    }else if(is_array($value)){
        foreach ($value as $elem){
            $arr = array_merge($arr,$this->Convert($arr,$elem));
        }
        if (!isset($arr[0])) $arr = array($arr); // <<< Code modified here
        return array($name=>($arr));
    }
    else if(is_object($value)){
        $arr = array_merge(array($name => $this->Convert($arr,$value)));

    }
    return $arr;
}

输出：

Array (
    [table] => Array (
            [0] => Array (
                    [tr] => Array (
                            [0] => Array (
                                    [td] => Name
                                )
                            [1] => Array (
                                    [td] => Age
                                )
                            [2] => Array (
                                    [td] => City
                                )
                        )
                )
        )
)

Answer 2

对我来说更简单，如果toArray()是HTMLElement，你可以在HTMLElement类中创建一个新方法$value，递归调用。

不再需要array_merge()。

这是完整的程序：

class HTMLElement
{
    private $name;
    private $value;

    function __construct($name,$value) {
        $this->name = $name;
        $this->value = $value;
    }

    public function getName(){
        return $this->name;
    }

    public function setName($name){
        $this->value = $name;
    }

    public function getValue(){
        return $this->value;
    }

    public function setValue($value){
        $this->value = $value;
    }

    public function toArray() {

        // Handle scalar values
        $val = $this->value ; 

        // Handle HTMLElement values
        if (is_object($this->value)) {
             $val = $this->value->toArray();
        } 

        // Handle array values :
        elseif (is_array($val)) {
            foreach ($val as &$item) {
                if (is_object($item)) {
                    $item = $item->toArray();
                }
            }
        }

        // Return Key/Value pair
        return [$this->name => $val] ;
    }

    public static function ConvertToHTMLElement(HTMLElement $obj){
        return new HTMLElement($obj->name,$obj->value);
    }

}

$elm = new HTMLElement(
    "table", array(
        new HTMLElement("tr", array(
                new HTMLElement("th", "Name"),
                new HTMLElement("th", "Age"),
                new HTMLElement("th", "City")
            )
        ),
        new HTMLElement("tr", array(
                new HTMLElement("td", "sjs"),
                new HTMLElement("td", "sss"),
                new HTMLElement("td", "ddd")
            )
        )
    )
);

$newArr = $elm->toArray() ;
print_r($newArr);

输出：

Array (
    [table] => Array (
            [0] => Array (
                    [tr] => Array (
                            [0] => Array (
                                    [th] => Name
                                )

                            [1] => Array (
                                    [th] => Age
                                )

                            [2] => Array (
                                    [th] => City
                                )
                        )
                )
            [1] => Array (
                    [tr] => Array (
                            [0] => Array (
                                    [td] => sjs
                                )

                            [1] => Array (
                                    [td] => sss
                                )

                            [2] => Array (
                                    [td] => ddd
                                )
                        )
                )
        )
)