php/src/Google/Protobuf/Internal/GPBLabel.php

<?php

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

namespace Google\Protobuf\Internal;

class GPBLabel
{
    const OPTIONAL = 1;
    const REQUIRED = 2;
    const REPEATED = 3;
}