PHP ***** ERROR ***** cause = is_a(): Deprecated. Please use the instanceof operator

After creating a completely new 5.2.1. environment for testing issues

1)
on creating almost any new object ticket, activity ...a.s.o. the following PHP error occurs:
2016-01-23 06:37:40.451 ***** ERROR ***** ERROR *****
2016-01-23 06:37:40.452 ***** ERROR ***** on file 'E:\develop\php_mysql_bsp\projeqtor_new\model\persistence\SqlElement.php' at line (4229)
2016-01-23 06:37:40.453 ***** ERROR ***** cause = is_a(): Deprecated. Please use the instanceof operator

this error occurs once per to be created object and somehow appears to be is similar to Ticket #1937 by lfrugere !

Changing the operator towards PHP5 compatibility makes the program run much more smoothly:

public static function is_a($object,$class) {
global $hideAutoloadError;
$hideAutoloadError=true; // Avoid error message in autoload
//$result=is_a($object,$class); // is_a classic
$result=($object instanceof $class); // instanceof in PHP5 style makes it run more smoothly
$hideAutoloadError=true;
return $result;
}
2)
language hr is not selectable in the parameter dialogue when creating a completely new 5.2.1. environment

Thank you !