XML foreach SimpleXMLElement - php

Question

I would like to read all the values in the <areaCalda> tag. I tried this way but it does not work.
this my xml:
<soap:....>
<listaStatoPS xmlns="http://stato.ps.ws.model.rc.nec">
<StatoPSWS>
<anagraficaPS>...</anagraficaPS>
<esitoRichiesta>...</esitoRichiesta>
<statoPS>
<areePS>
<AreaPS><areaCalda>true</areaCalda></AreaPS>
<AreaPS><areaCalda>false</areaCalda></AreaPS>
<AreaPS><areaCalda>false</areaCalda></AreaPS>
<AreaPS><areaCalda>true</areaCalda></AreaPS>
<AreaPS><areaCalda>true</areaCalda></AreaPS>
</areePS>
</statoPS>
</StatoPSWS>
<StatoPSWS>
<anagraficaPS>...</anagraficaPS>
<esitoRichiesta>...</esitoRichiesta>
<statoPS>
<areePS>
<AreaPS><areaCalda>false</areaCalda></AreaPS>
<AreaPS><areaCalda>false</areaCalda></AreaPS>
<AreaPS><areaCalda>false</areaCalda></AreaPS>
<AreaPS><areaCalda>true</areaCalda></AreaPS>
<AreaPS><areaCalda>false</areaCalda></AreaPS>
</areePS>
</statoPS>
</StatoPSWS>
</listaStatoPS>
<uuid xmlns="http://...">...</uuid>
</ns1:out>
</ns1:getStatoPSResponse>
</soap:Body>
</soap:Envelope>
my script: foreach ($sxe->xpath('//listaStatoPS:StatoPSWS') it's OK!
$sxe = new SimpleXMLElement($xml);
$sxe->registerXPathNamespace('listaStatoPS', 'http://stato.ps.ws.model.rc.nec');
foreach ($sxe->xpath('//listaStatoPS:StatoPSWS') as $item) // this WORK!
{
$data->registerXPathNamespace('listaStatoPS', 'http://stato.ps.ws.model.rc.nec');
$el2 = $data->xpath('//listaStatoPS:StatoPSWS:areePS:AreaPS');
foreach ($el2 as $val) // not work!
{
...
}
}
thank you

Answer 1

When you only read the areaCalda values, then you can use something like this.
$xml = new SimpleXMLElement(file_get_contents("test.xml"));
foreach ($xml->xpath("//areaCalda") as $item){
var_dump($item);
}
And don´t use for the next path : , you must use /
$sxe = new SimpleXMLElement($xml);
$sxe->registerXPathNamespace('listaStatoPS', 'http://stato.ps.ws.model.rc.nec');
foreach ($sxe->xpath('//listaStatoPS/StatoPSWS') as $item)
{
$data->registerXPathNamespace('listaStatoPS', 'http://stato.ps.ws.model.rc.nec');
$el2 = $item->xpath('//statoPS/areePS/AreaPS/areaCalda');
foreach ($el2 as $val)
{
...
}
}
And it should work