Connection::sqlFunctionConcatWs

public static Connection::sqlFunctionConcatWs()

public static function sqlFunctionConcatWs() {
  $args = func_get_args();
  $separator = array_shift($args);
  // If the separator is NULL, the result is NULL.
  if ($separator === FALSE || is_null($separator)) {
    return NULL;
  }
  // Skip any NULL values after the separator argument.
  $args = array_filter($args, function($value) {
    return !is_null($value);
  });
  return implode($separator, $args);
}