WorkflowDatabaseTiein/src/util.php

<?php
/**
 * File containing the ezcWorkflowDatabaseUtil class.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 * @package WorkflowDatabaseTiein
 * @version //autogen//
 * @copyright Copyright (C) 2005-2010 eZ Systems AS. All rights reserved.
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 * @access private
 */

/**
 * Utility methods for WorkflowDatabaseTiein.
 *
 * @package WorkflowDatabaseTiein
 * @version //autogen//
 * @access private
 */
abstract class ezcWorkflowDatabaseUtil
{
    /**
     * Wrapper for serialize() that returns an empty string
     * for empty arrays and null values.
     *
     * @param  mixed $var
     * @return string
     */
    public static function serialize( $var )
    {
        $var = serialize( $var );

        if ( $var == 'a:0:{}' || $var == 'N;' )
        {
            return '';
        }

        return $var;
    }

    /**
     * Wrapper for unserialize().
     *
     * @param  string $serializedVar
     * @param  mixed  $defaultValue
     * @return mixed
     */
    public static function unserialize( $serializedVar, $defaultValue = array() )
    {
        if ( !empty( $serializedVar ) )
        {
            return unserialize( $serializedVar );
        }
        else
        {
            return $defaultValue;
        }
    }
}
?>