PHP: SOAP response sort results - php

Question

I'm trying to sort the results by ROOMPRICE of a soap response :
stdClass Object (
[GetHotelsResult] => stdClass Object (
[SEARCH_RESPONSE] => Array (
[0] => stdClass Object (
[HOTELNAME] => Hotel1
[ROOMNAME] => Room2
[ROOMPRICE] => 144.50
)
[1] => stdClass Object (
[HOTELNAME] => Hotel1
[ROOMNAME] => Room1
[ROOMPRICE] => 231.10
)
[2] => stdClass Object (
[HOTELNAME] => Hotel1
[ROOMNAME] => Room3
[ROOMPRICE] => 94.00
)
)
)
);
I've made many solutions, but they didn't work...
MY ACTUAL CODE:
$sClient = new SoapClient($wsdl, array('trace' => 1));
$response = $sClient->GetHotels($data);
$ghdata = $sClient->__getLastResponse();
$doc = new DOMDocument();
$doc->loadXML($ghdata);
$x = $doc->documentElement;
$rooms = $x->getElementsByTagName( "SEARCH_RESPONSE" );
foreach( $rooms as $SEARCH_RESPONSE )
{ // show results

Answer 1

Assuming $response is your outer stdClass object, I guess you're getting and error like that:
Warning: usort() expects parameter 1 to be array, object given in ...
This is because usort works with array and not objects. What you actually want to sort is a SEARCH_RESPONSE array. Also, pay attention that elements in this array are stdClass objects themselves, so you have to use $a->{$key} notation instead of []:
function build_sorter($key) {
return function ($a, $b) use ($key) {
// pay attention to `{$key}` notation
return strnatcmp($a->{$key}, $b->{$key});
};
}
// Get array to sort
usort($response->GetHotelsResult->SEARCH_RESPONSE, build_sorter('ROOMPRICE'));
foreach ($response->GetHotelsResult->SEARCH_RESPONSE as $item) {
echo $item->ROOMNAME . ', ' . $item->ROOMPRICE . "\n";
}