New landtool.php for php7.4 and up

landtool.php

<?php

$request_xml = file_get_contents("php://input");

function preflightBuyLandPrep($method_name, $params, $app_data)
{
	
	$req     = new SimpleXMLElement(file_get_contents("php://input"));
	$amount       = $req->params[0]->param[0]->value[0]->struct[0]->member[3]->value[0]->int;
	
	// Define the response data with the required order
	$response_data = [
		'membership' => [],
		'landuse' => [
			'upgrade' => false,
			'action' => "http://invaliddomaininvalid.com/"
		],
		'success' => true,
		'confirm' => "asdfajsdkfjasdkfjalsdfjasdf",
		'currency' => [
			'estimatedCost' => (int)$amount
		]
	];
	
	// Initialize the root element
	$response_xml = new SimpleXMLElement('<?xml version="1.0" encoding="utf-8"?><methodResponse></methodResponse>');
	$params = $response_xml->addChild('params');
	$param = $params->addChild('param');
	$value = $param->addChild('value');
	
	// Build the structure manually
	$struct = $value->addChild('struct');
	
	// Recursive function to add struct members in the correct order
	function addStructMember(SimpleXMLElement $parent, $name, $value) {
		$member = $parent->addChild('member');
		$member->addChild('name', htmlspecialchars($name));
		$val = $member->addChild('value');
	
		if (is_array($value)) {
			$subStruct = $val->addChild('struct');
			foreach ($value as $key => $subValue) {
				addStructMember($subStruct, $key, $subValue);
			}
		} else {
			if (is_bool($value)) {
				$val->addChild('boolean', $value ? '1' : '0');
			} elseif (is_int($value)) {
				$val->addChild('i4', $value);
			} else {
				$val->addChild('string', htmlspecialchars($value));
			}
		}
	}

	// Add each member to the struct in the correct order
	foreach ($response_data as $key => $val) {
		addStructMember($struct, $key, $val);
	}
	
	header("Content-type: text/xml");
	print $response_xml->asXML();
	
	return "";
}

$xmlrpc_server = xmlrpc_server_create();

xmlrpc_server_register_method($xmlrpc_server, "preflightBuyLandPrep", "preflightBuyLandPrep");

xmlrpc_server_call_method($xmlrpc_server, $request_xml, array());

xmlrpc_server_destroy($xmlrpc_server);


?>