update code

protobuf/php/tests/proto/test_reserved_enum_value_lower.proto

@@ -0,0 +1,79 @@
+syntax = "proto3";
+
+package lower_enum_value;
+
+enum NotAllowed {
+  abstract = 0;
+  and = 1;
+  array = 2;
+  as = 3;
+  break = 4;
+  callable = 5;
+  case     = 6;
+  catch    = 7;
+  class    = 8;
+  clone    = 9;
+  const    = 10;
+  continue = 11;
+  declare  = 12;
+  default  = 13;
+  die      = 14;
+  do       = 15;
+  echo     = 16;
+  else     = 17;
+  elseif   = 18;
+  empty    = 19;
+  enddeclare = 20;
+  endfor     = 21;
+  endforeach = 22;
+  endif      = 23;
+  endswitch = 24;
+  endwhile = 25;
+  eval = 26;
+  exit = 27;
+  extends = 28;
+  final = 29;
+  for = 30;
+  foreach = 31;
+  function = 32;
+  global = 33;
+  goto = 34;
+  if = 35;
+  implements = 36;
+  include = 37;
+  include_once = 38;
+  instanceof = 39;
+  insteadof = 40;
+  interface = 41;
+  isset = 42;
+  list = 43;
+  namespace = 44;
+  new = 45;
+  or = 46;
+  print = 47;
+  private = 48;
+  protected = 49;
+  public = 50;
+  require = 51;
+  require_once = 52;
+  return = 53;
+  static = 54;
+  switch = 55;
+  throw = 56;
+  trait = 57;
+  try = 58;
+  unset = 59;
+  use = 60;
+  var = 61;
+  while = 62;
+  xor = 63;
+  int = 64;
+  float = 65;
+  bool = 66;
+  string = 67;
+  true = 68;
+  false = 69;
+  null = 70;
+  void = 71;
+  iterable = 72;
+}