如何把数组的key索引转化成数字索引

怎么把数组的key索引转化成数字索引？
比如我从ini文件中读取的信息是个一维数组：
这是我的ini文件
[web]
host = localhost
connuser = root
connpwd = root
conndb = myoffice

PHP code

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//读取文件
    function ReadConfig($filename)
    {
        if(file_exists($filename) == false)
        {
            //echo "<br>文件".$filename."不存在！<br>";
            return NULL;
        }
        return parse_ini_file($filename,true);
    }

//测试
    $Setting = array();
    $res = array();
    $Setting = ReadConfig("webconfig.ini");
    print_r($Setting);

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PHP code

Array
(
    [web] => Array
        (
            [host] => localhost
            [connuser] => root
            [connpwd] => root
            [conndb] => myoffice
        )

) <div class="clear">
                 
              
              
        
            </div>

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