PHP的：simplexml的 - 獲取attribue值

Question

<guid isPermaLink="false"> 

<title>iphone cover 4</title> 

<media:price>$35.95</media:price> 

<media:thumbnail url="http://rlv.zcache.com/22.jpg"/> 

<media:content url="http://rlv.zcache.com/440.jpg"/> 

嗨，上面是xml文件，我想讀書，我可以得到冠軍，媒體價甚至的GUID isPermalink attribute.But我不能得到媒體：縮略圖屬性 下面是我的code.I打破了我的頭5個小時:)。

foreach ($xml->channel->item as $cool) 
    { 
$per = $cool->guid["isPermaLink"]; 
$thumb = $cool->children('media', true)->price; 
$title = $cool->title; 
$thumb = $cool->children('media', true)->thumbnail["url"]; 
    } 

請幫我得到媒體：縮略圖屬性

Answer 1

通過縮略圖儘量週期屬性

foreach ($cool->children('media', true)->thumbnail as $thumb) { 
    $URL = $thumb['url'] 
}