Question

PHP怎么解析微信支付结果返回的xml

Answer 1

php解析xml报文的方法是DOMDocument：
解析方法如下：

$xmlstring = <<<XML
<?xml version='1.0'?>
<document>
<cmd attr='default'>login</cmd>
<login>imdonkey</login>
</document>
XML;

$dom = new DOMDocument();
$dom->loadXML($xmlstring);
print_r(getArray($dom->documentElement));

function getArray($node) {
$array = false;

if ($node->hasAttributes()) {
foreach ($node->attributes as $attr) {
$array[$attr->nodeName] = $attr->nodeValue;
}
}

if ($node->hasChildNodes()) {
if ($node->childNodes->length == 1) {
$array[$node->firstChild->nodeName] = getArray($node->firstChild);
} else {
foreach ($node->childNodes as $childNode) {
if ($childNode->nodeType != XML_TEXT_NODE) {
$array[$childNode->nodeName][] = getArray($childNode);
}
}
}
} else {
return $node->nodeValue;
}
return $array;
}

Answer 2

我一般是用 simplexml_load_string 函数，把xml变为对象

Answer 3

file_get_contents函数接到返回的xml数据
$data = json_decode(json_encode((array) simplexml_load_string($xml)), true);
这样直接转成数组，然后在做业务逻辑