使用SimpleXML遍历XML对象 [英] Loop through an XML object with SimpleXML
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问题描述
我正在尝试在PHP中使用SimpleXML遍历XML对象-对象格式如下:-
I am trying to use SimpleXML in PHP to loop through a XML object - the object format is below:-
当我尝试按名称获取元素标签时，出现以下错误-有人可以解释我在做什么吗?
I get the following error when I try to get the element tags by name - can anyone explain what I am doing wrong?
Call to undefined method SimpleXMLElement::getElementsByTagName() on ...
下面是我正在读取的XML文件:
Below is the XML file I am reading from:
<?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 = $xml->getElementsByTagName( "response" ); // error on this line
我试图使设备成为数组，以便可以在foreach循环中使用数据.
I am trying to make devices an array so I can use the data in a foreach loop.
推荐答案
SimpleXML没有getElementsByTagName()方法(DOMDocument有).
SimpleXML doesn't have a getElementsByTagName() method (DOMDocument does).
在SimpleXML中，对象(例如$xml)被视为根元素.因此，您可以像这样遍历产品项:
In SimpleXML, the object (e.g $xml) is treated as the root element. So you can loop through the product items like so:
$xml = simplexml_load_string($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:
Example of building a devices associative array:
$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
)
)
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