我如何通过simplexml_load_file从XML解析特定数据
[英]How can i parse specific data from XML via simplexml_load_file
问题描述
I am facing the following XML: 
我面临以下XML：
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_PURCHASE_VALUTA
[valid_from] => 2015-12-14 13:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 17.0266
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.326
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.4771
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 26.0743
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 19.5504
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_SALE_DEVIZA
[valid_from] => 2015-12-14 13:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 18.1262
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.6161
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.7017
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 27.5739
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 20.813
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_PURCHASE_DEVIZA
[valid_from] => 2015-12-14 13:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 17.34581
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.46043
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.54232
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 26.46609
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 19.91697
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_MIDDLE
[valid_from] => 2015-12-14 13:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 17.736
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.53827
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.622
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 27.02
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 20.365
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_SALE_VALUTA
[valid_from] => 2015-12-12 00:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 18.3578
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.6435
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.7488
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 27.8306
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 21.0322
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_PURCHASE_VALUTA
[valid_from] => 2015-12-12 00:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 17.0275
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.3251
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.4771
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 26.0743
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 19.5082
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_SALE_DEVIZA
[valid_from] => 2015-12-12 00:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 18.1272
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.6152
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.7017
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 27.5739
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 20.7681
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_PURCHASE_DEVIZA
[valid_from] => 2015-12-12 00:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 17.34679
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.45955
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.54232
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 26.46609
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 19.87394
)
)
)
)
SimpleXMLElement Object
(
[@attributes] => Array
(
[type] => XML_RATE_TYPE_EBNK_MIDDLE
[valid_from] => 2015-12-12 00:00:00.0
)
[currency] => Array
(
[0] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => AUD
[quota] => 1
[rate] => 17.737
)
)
[1] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => HRK
[quota] => 1
[rate] => 3.53737
)
)
[2] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => DKK
[quota] => 1
[rate] => 3.622
)
)
[3] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => EUR
[quota] => 1
[rate] => 27.02
)
)
[4] => SimpleXMLElement Object
(
[@attributes] => Array
(
[name] => JPY
[quota] => 100
[rate] => 20.321
)
)
)
)
I am not fimilar with XML at all. 我根本不熟悉XML。 I have always used JSON. 我一直使用JSON。 I need to return 2 arrays from the XML. 我需要从XML返回2个数组。 the must listen to specific conditions. 必须听取具体情况。 I need only the [currency] array where the type is valid from today. 我只需要类型从今天开始有效的[currency]数组。 like 喜欢
[valid_from] => date('Y-m-d')
Online URL to the XML: XML的在线URL：
I need two arrays one: 我需要两个数组之一：
@type:XML_RATE_TYPE_EBNK_PURCHASE_DEVIZA
@valid_from:2015-12-12 00:00:00.0
And 和
@type:XML_RATE_TYPE_EBNK_SALE_DEVIZA
@valid_from:2015-12-12 00:00:00.0
2 个解决方案
解决方案1
1 已采纳 2015-12-14 15:06:43
You can use instead DomDocument - http://php.net/manual/en/class.domdocument.php 您可以改用DomDocument - http: DomDocument
it allows you to read xml and select its nodes 它允许您读取xml并选择其节点
// Example
$dom = new DomDocument();
$dom->loadXML( file_get_contents($path) ); // $path -> where your xml saved
// it has methods get element by tag name
$tag = $dom->getElementsByTagName("some_tag_name");// it will return array
// it has methods get element attributees
$tag->item(0)->getAttribute('some_attribute'); // you can take 0 index and read its attribute
// to take tag value you can
$tag->item(0)->item(0)->nodeValue
// ...
If this basic example is not enough, if you can post your xml in your uestion i can try to help you with creation of exact commands 如果这个基本示例还不够，如果您可以将xml张贴到我的文章中，我可以尝试帮助您创建确切的命令
UPDATE UPDATE
$currencyArr1 = array();
$currencyArr2 = array();
$dom = new DomDocument();
$dom->loadXML( file_get_contents('http://104.236.115.118/application/currency_values/RB_Exchange_list.xml') );//$path path to your xml
$exchangeRates = $dom->getElementsByTagName("exchange_rate");
foreach ($exchangeRates as $exchangeRate){
$validFrom = $exchangeRate->getAttribute('valid_from');// Your date
$type = $exchangeRate->getAttribute('type');// Your type
//First array case
//@type:XML_RATE_TYPE_EBNK_PURCHASE_DEVIZA
//@valid_from:2015-12-12 00:00:00.0
if( $type == "XML_RATE_TYPE_EBNK_PURCHASE_DEVIZA" &&
date('Y-m-d H:i:s', strtotime($validFrom)) == date('Y-m-d H:i:s', strtotime("2015-12-12 00:00:00")) ){
$currencyes = $exchangeRate->getElementsByTagName("currency");
foreach ($currencyes as $currency){
$currencyArr1[] = array(
"name" => $currency->getAttribute("name"),
"quota" => $currency->getAttribute("quota"),
"rate" => $currency->getAttribute("rate"),
);
}
}
//Second array case
//@type:XML_RATE_TYPE_EBNK_SALE_DEVIZA
//@valid_from:2015-12-12 00:00:00
if( $type == "XML_RATE_TYPE_EBNK_SALE_DEVIZA" &&
date('Y-m-d H:i:s', strtotime($validFrom)) == date('Y-m-d H:i:s', strtotime("2015-12-12 00:00:00")) ){
$currencyes = $exchangeRate->getElementsByTagName("currency");
foreach ($currencyes as $currency){
$currencyArr2[] = array(
"name" => $currency->getAttribute("name"),
"quota" => $currency->getAttribute("quota"),
"rate" => $currency->getAttribute("rate"),
);
}
}
}
echo "ARRAY1:"; var_dump($currencyArr1);
echo "<br /><br />ARRAY2:"; var_dump($currencyArr2);
解决方案2
0 2015-12-14 17:08:44
If you're interested in using SimpleXML, you should use the xpath function . 如果您对使用SimpleXML感兴趣，则应使用xpath函数 。
For example, this should theoretically let you iterate through all of the elements named "exchange_rate" with type=XML_RATE_TYPE_EBNK_SALE_VALUTA 例如，从理论上讲，这应该使您可以遍历type=XML_RATE_TYPE_EBNK_SALE_VALUTA所有名为“ exchange_rate”的元素
$content->xpath('exchange_rate[type="XML_RATE_TYPE_EBNK_SALE_VALUTA"]');
You can then loop through the result and compare the values of different attributes (found through the attribute property ). 然后，您可以遍历结果并比较不同属性的值（可通过attribute属性找到）。
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