Cannot parse XML using simplexml_load_string - php

Question

I have tried various methods as seen in here
and in here and many more.
I even tried the function in here.
The XML looks something like this:
<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing"><s:Header><a:Action s:mustUnderstand="1">http://tempuri.org/IFooEntryOperation/SaveFooStatusResponse</a:Action></s:Header><s:Body><SaveFooStatusResponse xmlns="http://htempuri.org/"><SaveFooStatusResult xmlns:b="http://schemas.datacontract.org/2004/07/FooAPI.Entities.Foo" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><b:AWBNumber>999999999</b:AWBNumber><b:IsError>true</b:IsError><b:Status><b:FooEntryStatus><b:StatusCode>Foo_ENTRY_FAILURE</b:StatusCode><b:StatusInformation>InvalidEmployeeCode</b:StatusInformation></b:FooEntryStatus></b:Status></SaveFooStatusResult></SaveFooStatusResponse></s:Body></s:Envelope>
And here's one example of my code (I have a dozen variations):
$ReturnData = $row["ReturnData"]; // string frm a database
if (strpos($ReturnData, "s:Envelope") !== false){
$ReturnXML = new SimpleXMLElement($ReturnData);
$xml = simplexml_load_string($ReturnXML);
$StatusCode = $xml["b:StatusCode"];
echo "<br>StatusCode: " . $StatusCode;
$IsError = $xml["b:IsError"];
echo "<br>IsError: " . $IsError;
}
Another option I tried:
$test = json_decode(json_encode($xml, 1); //this didn't work either
I either get an empty array or I get errors like:
"Fatal error: Uncaught exception 'Exception' with message 'String
could not be parsed as XML"
I have tried so many things, I may lost track of where my code is right now. Please help - I am really stuck...
I also tried:
$ReturnXML = new SimpleXMLElement($ReturnData);
foreach( $ReturnXML->children('b', true)->entry as $entries ) {
echo (string) 'Summary: ' . simplexml_load_string($entries->StatusCode->children()->asXML(), null, LIBXML_NOCDATA) . "<br />\n";
}

Answer 1

Method 1.
You can try the below code snippet to parse it an array
$p = xml_parser_create();
xml_parse_into_struct($p, $xml, $values, $indexes);// $xml containing the XML
xml_parser_free($p);
echo "Index array\n";
print_r($indexes);
echo "\nVals array\n";
print_r($values);
Method 2.
function XMLtoArray($xml) {
$previous_value = libxml_use_internal_errors(true);
$dom = new DOMDocument('1.0', 'UTF-8');
$dom->preserveWhiteSpace = false;
$dom->loadXml($xml);
libxml_use_internal_errors($previous_value);
if (libxml_get_errors()) {
return [];
}
return DOMtoArray($dom);
}
function DOMtoArray($root) {
$result = array();
if ($root->hasAttributes()) {
$attrs = $root->attributes;
foreach ($attrs as $attr) {
$result['#attributes'][$attr->name] = $attr->value;
}
}
if ($root->hasChildNodes()) {
$children = $root->childNodes;
if ($children->length == 1) {
$child = $children->item(0);
if (in_array($child->nodeType,[XML_TEXT_NODE,XML_CDATA_SECTION_NODE]))
{
$result['_value'] = $child->nodeValue;
return count($result) == 1
? $result['_value']
: $result;
}
}
$groups = array();
foreach ($children as $child) {
if (!isset($result[$child->nodeName])) {
$result[$child->nodeName] = DOMtoArray($child);
} else {
if (!isset($groups[$child->nodeName])) {
$result[$child->nodeName] = array($result[$child->nodeName]);
$groups[$child->nodeName] = 1;
}
$result[$child->nodeName][] = DOMtoArray($child);
}
}
}
return $result;
}
You can get an array using print_r(XMLtoArray($xml));

Answer 2

I don't know how you would do this using SimpleXMLElement but judging by the fact you have tried so many things I trust that the actual method employed is not important so you should therefore find the following, which uses DOMDocument and DOMXPath, of interest.
/* The SOAP response */
$strxml='<?xml version="1.0" encoding="UTF-8"?>
<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
<a:Action s:mustUnderstand="1">http://tempuri.org/IFooEntryOperation/SaveFooStatusResponse</a:Action>
</s:Header>
<s:Body>
<SaveFooStatusResponse xmlns="http://htempuri.org/">
<SaveFooStatusResult xmlns:b="http://schemas.datacontract.org/2004/07/FooAPI.Entities.Foo" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<b:AWBNumber>999999999</b:AWBNumber>
<b:IsError>true</b:IsError>
<b:Status>
<b:FooEntryStatus>
<b:StatusCode>Foo_ENTRY_FAILURE</b:StatusCode>
<b:StatusInformation>InvalidEmployeeCode</b:StatusInformation>
</b:FooEntryStatus>
</b:Status>
</SaveFooStatusResult>
</SaveFooStatusResponse>
</s:Body>
</s:Envelope>';
/* create the DOMDocument and manually control errors */
libxml_use_internal_errors( true );
$dom=new DOMDocument;
$dom->validateOnParse=true;
$dom->recover=true;
$dom->strictErrorChecking=true;
$dom->loadXML( $strxml );
libxml_clear_errors();
/* Create the XPath object */
$xp=new DOMXPath( $dom );
/* Register the various namespaces found in the XML response */
$xp->registerNamespace('b','http://schemas.datacontract.org/2004/07/FooAPI.Entities.Foo');
$xp->registerNamespace('i','http://www.w3.org/2001/XMLSchema-instance');
$xp->registerNamespace('s','http://www.w3.org/2003/05/soap-envelope');
$xp->registerNamespace('a','http://www.w3.org/2005/08/addressing');
/* make XPath queries for whatever pieces of information you need */
$Action=$xp->query( '//a:Action' )->item(0)->nodeValue;
$StatusCode=$xp->query( '//b:StatusCode' )->item(0)->nodeValue;
$StatusInformation=$xp->query( '//b:StatusInformation' )->item(0)->nodeValue;
printf(
"<pre>
%s
%s
%s
</pre>",
$Action,
$StatusCode,
$StatusInformation
);
The output from the above:
http://tempuri.org/IFooEntryOperation/SaveFooStatusResponse
Foo_ENTRY_FAILURE
InvalidEmployeeCode