core/parameter/Getter.class.php
public function exist(Array $namespaces): string {
    $exist = false;
    foreach ($namespaces as $namespace) {
      if (in_array($namespace, $_SERVER['argv'])) {
        $exist = true;
      }
    }
    return $exist;
  }
public function exist(Array $namespaces): string {
    $exist = false;
    foreach ($namespaces as $namespace) {
      if (in_array($namespace, $_SERVER['argv'])) {
        $exist = true;
      }
    }
    return $exist;
  }
- Check variable exist
@param Array $namespaces Variable namespace
@return bool Case exist return true, or false case not exist