我正在尝试在PHP中使用SimpleXML来遍历XML对象 - 对象格式如下: -
当我尝试按名称获取元素标记时出现以下错误 - 有人可以解释我做错了什么吗?
Call to undefined method SimpleXMLElement::getElementsByTagName() on ...
以下是我正在阅读的XML文件:
<?xml version="1.0" encoding="utf-8"?>
<response>
<products>
<item>
<product_id>32417</product_id>
<manufacturer>Alcatel</manufacturer>
<model>Sparq 2</model>
<deeplink>http://www.mysite.com/sc_offer?gid=32417</deeplink>
<thumbnail_URL>http://www.mysite.com/images/devices/thumbs/Alcatel-Sparq-II.jpg</thumbnail_URL>
<image_URL>http://www.mysite.com/images/devices/Alcatel-Sparq-II.jpg</image_URL>
<price_not_working>0.00</price_not_working>
<price_poor>0.00</price_poor>
<price_fair>20.00</price_fair>
<price_good>25.00</price_good>
<price_perfect>25.00</price_perfect>
<price_new>25.00</price_new>
<battery_new>1.00</battery_new>
<battery_perfect>1.00</battery_perfect>
<battery_good>1.00</battery_good>
<battery_fair>1.00</battery_fair>
<battery_poor>0.00</battery_poor>
<charger_new>1.00</charger_new>
<charger_perfect>1.00</charger_perfect>
<charger_good>1.00</charger_good>
<charger_fair>1.00</charger_fair>
<charger_poor>0.00</charger_poor>
<packaging_new>1.00</packaging_new>
<packaging_perfect>1.00</packaging_perfect>
<packaging_good>1.00</packaging_good>
<packaging_fair>1.00</packaging_fair>
<packaging_poor>0.00</packaging_poor>
</item>
<item>
<product_id>31303</product_id>
<manufacturer>Apple</manufacturer>
<model>iPhone 3G 8gb</model>
<deeplink>http://www.mysite.com/sc_offer?gid=31303</deeplink>
<thumbnail_URL>http://www.mysite.com/images/devices/thumbs/iPhone 8 3G.jpg</thumbnail_URL>
<image_URL>http://www.mysite.com/images/devices/iPhone 8 3G.jpg</image_URL>
<price_not_working>0.00</price_not_working>
<price_poor>0.00</price_poor>
<price_fair>7.00</price_fair>
<price_good>2.00</price_good>
<price_perfect>2.00</price_perfect>
<price_new>2.00</price_new>
<battery_new>1.00</battery_new>
<battery_perfect>1.00</battery_perfect>
<battery_good>1.00</battery_good>
<battery_fair>1.00</battery_fair>
<battery_poor>0.00</battery_poor>
<charger_new>1.00</charger_new>
<charger_perfect>1.00</charger_perfect>
<charger_good>1.00</charger_good>
<charger_fair>1.00</charger_fair>
<charger_poor>0.00</charger_poor>
<packaging_new>1.00</packaging_new>
<packaging_perfect>1.00</packaging_perfect>
<packaging_good>1.00</packaging_good>
<packaging_fair>1.00</packaging_fair>
<packaging_poor>0.00</packaging_poor>
</item>
</products>
</response>
我的PHP代码如下:
$devices = $xml->getElementsByTagName( "response" ); // error on this line
我正在尝试将设备设为数组,以便在foreach循环中使用数据。
答案 0 :(得分:31)
SimpleXML没有getElementsByTagName()
方法(DOMDocument确实如此)。
在SimpleXML中,对象(例如$xml
)被视为根元素。所以你可以像这样遍历产品项目:
$xml = simplexml_load_string($xmlString);
foreach($xml->products->item as $item)
{
echo (string)$item->product_id;
echo (string)$item->model;
}
构建设备关联数组的示例:
$devices = array();
$xml = simplexml_load_string($xmlString);
foreach($xml->products->item as $item)
{
$device = array();
foreach($item as $key => $value)
{
$device[(string)$key] = (string)$value;
}
$devices[] = $device;
}
print_r($devices);
输出:
Array
(
[0] => Array
(
[product_id] => 32417
[manufacturer] => Alcatel
[model] => Sparq 2
[deeplink] => http://www.mysite.com/sc_offer?gid=32417
[thumbnail_URL] => http://www.mysite.com/images/devices/thumbs/Alcatel-Sparq-II.jpg
[image_URL] => http://www.mysite.com/images/devices/Alcatel-Sparq-II.jpg
[price_not_working] => 0.00
[price_poor] => 0.00
[price_fair] => 20.00
[price_good] => 25.00
[price_perfect] => 25.00
[price_new] => 25.00
[battery_new] => 1.00
[battery_perfect] => 1.00
[battery_good] => 1.00
[battery_fair] => 1.00
[battery_poor] => 0.00
[charger_new] => 1.00
[charger_perfect] => 1.00
[charger_good] => 1.00
[charger_fair] => 1.00
[charger_poor] => 0.00
[packaging_new] => 1.00
[packaging_perfect] => 1.00
[packaging_good] => 1.00
[packaging_fair] => 1.00
[packaging_poor] => 0.00
)
[1] => Array
(
[product_id] => 31303
[manufacturer] => Apple
[model] => iPhone 3G 8gb
[deeplink] => http://www.mysite.com/sc_offer?gid=31303
[thumbnail_URL] => http://www.mysite.com/images/devices/thumbs/iPhone 8 3G.jpg
[image_URL] => http://www.mysite.com/images/devices/iPhone 8 3G.jpg
[price_not_working] => 0.00
[price_poor] => 0.00
[price_fair] => 7.00
[price_good] => 2.00
[price_perfect] => 2.00
[price_new] => 2.00
[battery_new] => 1.00
[battery_perfect] => 1.00
[battery_good] => 1.00
[battery_fair] => 1.00
[battery_poor] => 0.00
[charger_new] => 1.00
[charger_perfect] => 1.00
[charger_good] => 1.00
[charger_fair] => 1.00
[charger_poor] => 0.00
[packaging_new] => 1.00
[packaging_perfect] => 1.00
[packaging_good] => 1.00
[packaging_fair] => 1.00
[packaging_poor] => 0.00
)
)
答案 1 :(得分:3)
我不想破坏the existing answer因为它以一般的方式回答正确的问题。
对于您的具体要求,您的XML没有任何属性,您只是在寻找 element-name =&gt; node-value 对,这里有一个与SimpleXMLElement结合使用的函数:get_object_vars
。
无论何时将对象转换为数组,并且SimpleXMLElement将元素名称转换为对象属性名称,并将node-values作为那些属性值,它在这里非常简单:
$xml = simplexml_load_string($buffer);
$items = $xml->products->item;
$devices = array_map('get_object_vars', iterator_to_array($items, FALSE));
print_r($devices);
输出与现有答案中的建议相同。在线演示在这里:https://eval.in/57109。
你可能会在转换到数组时获得类似的结果(如果与SimpleXML不完全相同),但是在这种情况下我想要映射它,我需要一个真正的函数。
还有json-en-和-de-code加倍转换完整的树,这在这里也很方便:
$xml = simplexml_load_string($buffer);
$items = $xml->products;
$devices = json_decode(json_encode($items), TRUE)['item'];
然后输出再次与现有答案完全一样。在线演示再次出现在:https://eval.in/57117
希望这会有所帮助并扩大视野。