/**
* Checks if a function can be promoted to a static function call
*
* @param Call $call
* @param string $functionName
* @return boolean
*/
public function canBeInternal($call, $functionName)
{
$reflector = $call->getReflector($functionName);
if ($reflector) {
if ($reflector->isInternal()) {
switch ($reflector->getExtensionName()) {
case 'standard':
case 'Core':
case 'pcre':
return true;
default:
break;
}
}
}
return false;
}