gnu-social/lib/exceptions/clientexception.php

<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Class for a client exception (user error)
 *
 * @category  Exception
 * @package   GNUsocial
 * @author    Evan Prodromou <evan@status.net>
 * @copyright 2008 StatusNet, Inc.
 * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
 */

defined('GNUSOCIAL') || die();

/**
 * Class for client exceptions
 *
 * Subclass of PHP Exception for user errors.
 *
 * @category  Exception
 * @package   GNUsocial
 * @author    Evan Prodromou <evan@status.net>
 * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
 */
class ClientException extends Exception
{
    public function __construct(
        string $message = '',
        int $code = 500,
        Throwable $previous = null
    ) {
        parent::__construct($message, $code, $previous);
    }

    // custom string representation of object
    public function __toString()
    {
        return __CLASS__ . ": [{$this->code}]: {$this->message}\n";
    }
}