int(2)
int(10)
Argument 1 passed to {closure}() must be of the type int, string given, called in /home/kienthuc1/tool.kienthuclinux.info/services/custombuild/php/php-8.1.17/Zend/tests/arrow_functions/006.php on line 15
array(3) {
  [0]=>
  int(20)
  [1]=>
  NULL
  [2]=>
  int(30)
}
Argument 2 passed to {closure}() must be of the type int or null, string given, called in /home/kienthuc1/tool.kienthuclinux.info/services/custombuild/php/php-8.1.17/Zend/tests/arrow_functions/006.php on line 23