1

在我的 PHP 站点中，我想读取这样的 xml 文件：

<?xml version="1.0" standalone="yes"?>
<RETURNDATA lang="it-IT" type="COR" xsi:noNamespaceSchemaLocation="http://xmlv5test.travco.co.uk/trlink/schema/CountryRequestV6Rcv.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <MESSAGE>All Countries details and relevant city details</MESSAGE>
    <DATA COUNTRY_CODE="ABW" CURRENCY_CODE="EUR">
        <COUNTRY_NAME>Aruba</COUNTRY_NAME>
        <CURRENCY_NAME>euro</CURRENCY_NAME>
        <COUNTRY_CITIES>
            <CITY_DATA CITY_CODE="AUA">
                <CITY_NAME>Aruba</CITY_NAME>
            </CITY_DATA>
        </COUNTRY_CITIES>
    </DATA>
    <DATA COUNTRY_CODE="ALB" CURRENCY_CODE="EUR">
        <COUNTRY_NAME>Albania</COUNTRY_NAME>
        <CURRENCY_NAME>euro</CURRENCY_NAME>
        <COUNTRY_CITIES>
            <CITY_DATA CITY_CODE="TIA">
                <CITY_NAME>Tirana</CITY_NAME>
            </CITY_DATA>
        </COUNTRY_CITIES>
    </DATA>
    <DATA COUNTRY_CODE="ARE" CURRENCY_CODE="EUR">
        <COUNTRY_NAME>Emirati Arabi Uniti</COUNTRY_NAME>
        <CURRENCY_NAME>euro</CURRENCY_NAME>
        <COUNTRY_CITIES>
            <CITY_DATA CITY_CODE="DXB">
                <CITY_NAME>Dubai</CITY_NAME>
            </CITY_DATA>
            <CITY_DATA CITY_CODE="AAI">
                <CITY_NAME>Al Ain</CITY_NAME>
            </CITY_DATA>
            <CITY_DATA CITY_CODE="FJR">
                <CITY_NAME>Fujaira</CITY_NAME>
            </CITY_DATA>
            <CITY_DATA CITY_CODE="SSH">
                <CITY_NAME>Sharja</CITY_NAME>
            </CITY_DATA>
            <CITY_DATA CITY_CODE="RKT">
                <CITY_NAME>Ras al-Khaimah</CITY_NAME>
            </CITY_DATA>
            <CITY_DATA CITY_CODE="AUH">
                <CITY_NAME>Abu Dhabi</CITY_NAME>
            </CITY_DATA>
         </COUNTRY_CITIES>
     </DATA>
</RETURNDATA>

我想在每个节点名称中输入 DATA 并取：
COUNTRY_CODE
CURRENCY_CODE
COUNTRY_NAME
CURRENCY_NAME
并将所有国家的城市代码和名称放入一个关联的数组中。

我尝试过使用 SimpleXML，但 XML 是动态的，我想优化我的周期，因为我可以拥有一个非常大的 XML（这只是它的一小部分）。

$xml_str = file_get_contents('xml/country.xml');
    $xml = new SimpleXMLElement($xml_str);
    echo $xml->getName(), PHP_EOL;
    foreach($xml as $name => $part) {
       echo "$name: $part", PHP_EOL;
    }

我想创建一个非常优化的循环来获取我的价值

4

2 回答 2

2

使用以下样式仅访问<DATA>根元素中的子元素：

foreach ($xml->DATA as $name => $part) {

Also please check the SimpleXML Introduction it should have some good examples for you showing different ways how to do the basic stuff with SimpleXML. The documentation is pretty good.

于 2013-03-08T14:52:29.477 回答
1

您可以直接使用 XML 解析器，这很可能是最有效的方法

set_time_limit(0);
define('__BUFFER_SIZE__', 131072);
define('__XML_FILE__', 'pf_1360591.xml');

function elementStart($p, $n, $a) {
  //handle opening of elements
}

function elementEnd($p, $n) {
  //handle closing of elements
}

function elementData($p, $d) {
  //handle cdata in elements
}

$xml = xml_parser_create();

xml_parser_set_option($xml, XML_OPTION_TARGET_ENCODING, 'UTF-8');
xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1);

xml_set_element_handler($xml, 'elementStart', 'elementEnd');
xml_set_character_data_handler($xml, 'elementData');

$f = fopen(__XML_FILE__, 'r');
if($f) {
  while(!feof($f)) {
    $content = fread($f, __BUFFER_SIZE__);

    xml_parse($xml, $content, feof($f));

    unset($content);
  }
  fclose($f);
}
于 2013-03-07T14:41:46.513 回答