Read XML data from string [duplicate] - php

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This question already has answers here:
Reference - How do I handle Namespaces (Tags and Attributes with a Colon in their Name) in SimpleXML?
(2 answers)
Closed 2 years ago.
now i need to ask this, have this XML:
<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="http://webservice.telemetry.udo.fors.ru/" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<soapenv:Header>
<wsse:Security soapenv:mustUnderstand="1">
<wsse:UsernameToken>
<wsse:Username/>
<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText"/>
</wsse:UsernameToken>
</wsse:Security>
</soapenv:Header>
<soapenv:Body>
<web:storeTelemetryList xmlns="http://webservice.telemetry.udo.fors.ru/">
<telemetryWithDetails xmlns="">
<telemetry>
<coordX>-108.345268</coordX>
<coordY>25.511797</coordY>
<date>2020-04-16T16:48:07Z</date><glonass>0</glonass>
<gpsCode>459971</gpsCode>
<speed>0</speed>
</telemetry>
</telemetryWithDetails>
</web:storeTelemetryList>
</soapenv:Body>
</soapenv:Envelope>
and im using simplexml on PHP to read it but i get the error "Trying to get property 'telemetryWithDetails' of non-object" when i try to get the data in coordx, coordy,date, gpscode and speed node but i cant get there here is my code:
$string = <<<XML
<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope...(same from above)
XML;
$xml = new SimpleXMLElement($string);
echo $xml->Body->storeTelemetryList->telemetryWithDetails;
if i put "->telemetryWithDetails->telemetry->coordX" i get "Trying to get property 'telemetry' of non-object, Trying to get property 'coordX' of non-object" and the same if use "simplexml_load_string" Hope you can help me thanks

Answer 1

A simple solution is to use XPath and describe the "path" to the values you want :
$xml = simplexml_load_string($xmlstring);
$telemetries = $xml->xpath('/soapenv:Envelope/soapenv:Body/web:storeTelemetryList/telemetryWithDetails/telemetry');
$telemetry = $telemetries[0] ;
$coordX = (string) $telemetry->xpath('./coordX')[0] ;
$coordY = (string) $telemetry->xpath('./coordY')[0] ;
echo $coordX ; //-108.345268
echo $coordY ; // 25.511797
XPath returns always a collection, so select the first node with [0]. The (string) conversion is used to extract the text value inside the node.