如何将 XML 转换为 JSON

Question

如何将此 XML 转换为 JSON

<?xml version="1.0" encoding="UTF-8"?>
<ns0:COMMAND xmlns:ns0="http://www.tibco.com/schemas/pinless/PINLESS.core/C2STransferBillPayment/Schema.xsd9">
    <ns0:TYPE>EXRCTRFRESP</ns0:TYPE>
    <ns0:TXNSTATUS>200</ns0:TXNSTATUS>
    <ns0:DATE>02/02/20</ns0:DATE>
    <ns0:EXTREFNUM>20200202192308729Af9cWtvg3W</ns0:EXTREFNUM>
    <ns0:TXNID>R200202.1923.250008</ns0:TXNID>
    <ns0:MESSAGE>R200202.1923.250008 confirmed. </ns0:MESSAGE>
</ns0:COMMAND>

我试过这样做，但是 return 空数组。

$string = '<?xml version="1.0" encoding="UTF-8"?><ns0:COMMAND xmlns:ns0="http://www.tibco.com/schemas/pinless/PINLESS.core/C2STransferBillPayment/Schema.xsd9"><ns0:TYPE>EXRCTRFRESP</ns0:TYPE><ns0:TXNSTATUS>200</ns0:TXNSTATUS><ns0:DATE>02/02/20</ns0:DATE><ns0:EXTREFNUM>20200202192308729Af9cWtvg3W</ns0:EXTREFNUM><ns0:TXNID>R200202.1923.250008</ns0:TXNID><ns0:MESSAGE>R200202.1923.250008 confirmed.  </ns0:MESSAGE></ns0:COMMAND>';

$xmlObject = simplexml_load_string($string);

$jsonString = json_encode($xmlObject);

$jsonArray = json_decode($jsonString, true);

var_dump($jsonArray);

有人帮忙吗？

Answer 1

首先，请查看文档中这个PHP的内置函数simplexml_load_string，看看这个函数有哪些参数，为什么？由于您的 xml 字符串正在使用命名空间，因此您必须提供命名空间作为第四个参数。看下面的代码：

<?php

$xml_string = <<<EOR
<?xml version="1.0" encoding="UTF-8"?>
<ns0:COMMAND xmlns:ns0="http://www.tibco.com/schemas/pinless/PINLESS.core/C2STransferBillPayment/Schema.xsd9">
    <ns0:TYPE>EXRCTRFRESP</ns0:TYPE>
    <ns0:TXNSTATUS>200</ns0:TXNSTATUS>
    <ns0:DATE>02/02/20</ns0:DATE>
    <ns0:EXTREFNUM>20200202192308729Af9cWtvg3W</ns0:EXTREFNUM>
    <ns0:TXNID>R200202.1923.250008</ns0:TXNID>
    <ns0:MESSAGE>R200202.1923.250008 confirmed. </ns0:MESSAGE>
</ns0:COMMAND>
EOR;

$xml = simplexml_load_string($xml_string, "SimpleXMLElement", LIBXML_NOCDATA, 'ns0', true);
$json = json_encode($xml);
$array = json_decode($json, true);

echo '<pre>';
print_r($array);

// Outputs

Array
(
    [TYPE] => EXRCTRFRESP
    [TXNSTATUS] => 200
    [DATE] => 02/02/20
    [EXTREFNUM] => 20200202192308729Af9cWtvg3W
    [TXNID] => R200202.1923.250008
    [MESSAGE] => R200202.1923.250008 confirmed. 
)

顺便说一句，您也可以使用 xml 文件来做到这一点。在那种情况下，您需要以相同的方式使用此功能simplexml_load_file()。

<?php

$xml_file = 'your_xml_file_location.xml';
$xml = simplexml_load_file($xml_file, "SimpleXMLElement", LIBXML_NOCDATA, 'ns0', true);

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