用于创建多维数组的构造结构看起来如何

Question

我正在尝试创建创建多维数组的构造函数。我的结果应该是这样的：-

Checkout my array $result_array

现在我有错误：非法偏移类型。请注意，我也使用 __toString() 因为我处理 xml 数据。

class Property {

    public $xmlClass;
    public $elemClass = '';
    public $first_array = array();
    public $result_array = array();
    public $data = '';
    public $data2 = '';

    public function __construct($xml, $elem) {
        $this->xmlClass = $xml;
        $this->elemClass = $elem;

        foreach ($xml->xpath('//*[@baza]') as $val) {
            $this->first_array[] = $val;
            foreach ($val->ksiazka as $value) {
                $data = $value->$elem->__toString();
                $this->result_array[$this->first_array][] = $data;
            }
        }
    }

    public function getResult() {
        return $this->result_array;
    }

}

$result_autor = new Property($xml, 'autor');
$autor = $result_autor->getResult();

Answer 1

您需要更改您的两个foreach()，如下所示：-

foreach($xml->xpath('//*[@baza]') as $val) {
    //$this->first_array[] = $val; not needed
    foreach($val->ksiazka as $key=> $value){ //check $key here
      $data = $value->$elem->__toString();
      $this->result_array[$key][] = $data; // add $key hear
    }
}

如果上述方法不起作用，请也检查一下：-

foreach($xml->xpath('//*[@baza]') as $key=> $val) { //check $key here
    //$this->first_array[] = $val; not needed
    foreach($val->ksiazka as $value){ 
      $data = $value->$elem->__toString();
      $this->result_array[$key][] = $data; // add $key hear
    }
}