PHPを使って配列に_attrキー値を格納する方法は？

Question

私はxml2array.phpを使用して自分のxmlを配列に解析しました。 それはどのように私は別の配列内のすべての_attrキー値を格納することができます

Array(
[HotelImage] => Array 
(
     [0] => Array 
     (
    ) 

     [1] => Array 
     (
    ) 

     [0_attr] => Array 
     (
      [Type] => Bar/Lounge 
      [URL] => http://images.gta-travel.com/HH/Images/SA/ELS/ELS-HOL1-11.jpg 
    ) 

     [1_attr] => Array 
     (
      [Type] => Lobby 
      [URL] => http://images.gta-travel.com/HH/Images/SA/ELS/ELS-HOL1-8.jpg 
    ) 

     [2] => Array 
     (
    ) 

     [2_attr] => Array 
     (
      [Type] => Exterior 
      [URL] => http://images.gta-travel.com/HH/Images/SA/ELS/ELS-HOL1-1.jpg 
    ) 

     [3] => Array 
     (
    ) 

     [3_attr] => Array 
     (
      [Type] => Recreational Facilities 
      [URL] => http://images.gta-travel.com/HH/Images/SA/ELS/ELS-HOL1-12.jpg 
    ) 

    ) 
) 

のような配列を与えました。

Answer 1

// this may cause a dereference error.. if it does just run array_keys 
// and stro it in a sperate var that is then passed to preg_grep 
$attrKeys = preg_grep('#\d+_attr#', array_keys($xmlArray)); 
$attrKeys = array_flip($attrKeys); 
$attributes = array_intersect_key($xmlArray, $attrKeys); 
$tags = array_diff_key($xmlArray, $attributes);