/**
* Attempt to get the method signatures in one request via system.multicall().
* This is a boxcar feature of XML-RPC and is found on fewer servers. However,
* can significantly improve performance if present.
*
* @param array $methods
* @return array array(array(return, param, param, param...))
*/
public function getSignatureForEachMethodByMulticall($methods = null)
{
if ($methods === null) {
$methods = $this->listMethods();
}
$multicallParams = array();
foreach ($methods as $method) {
$multicallParams[] = array('methodName' => 'system.methodSignature', 'params' => array($method));
}
$serverSignatures = $this->system->multicall($multicallParams);
if (!is_array($serverSignatures)) {
$type = gettype($serverSignatures);
$error = "Multicall return is malformed. Expected array, got {$type}";
throw new Exception\IntrospectException($error);
}
if (count($serverSignatures) != count($methods)) {
$error = 'Bad number of signatures received from multicall';
throw new Exception\IntrospectException($error);
}
// Create a new signatures array with the methods name as keys and the signature as value
$signatures = array();
foreach ($serverSignatures as $i => $signature) {
$signatures[$methods[$i]] = $signature;
}
return $signatures;
}
