织梦不跳转index.html页面

<?php
    if(!file_exists(dirname(__FILE__).'/data/common.inc.php'))      
    if(!file_exists(dirname(__FILE__).'/data/common.inc.php'))
    {
        {
            header('Location:install/index.php');
            header('Location:install/index.php');
            exit();
            exit();
        }       
    }
require_once (dirname(__FILE__) . "/include/common.inc.php");
require_once (dirname(__FILE__) . "/include/common.inc.php");
require_once DEDEINC."/arc.partview.class.php"; 
require_once DEDEINC."/arc.partview.class.php";
$GLOBALS['_arclistEnv'] = 'index';
$GLOBALS['_arclistEnv'] = 'index';
$row = $dsql->GetOne("Select * From `dede_homepageset`");
$row = $dsql->GetOne("Select * From `dede_homepageset`");
$row['templet'] = MfTemplet($row['templet']);
$row['templet'] = MfTemplet($row['templet']);
$pv = new PartView();
$pv = new PartView();
$pv->SetTemplet($cfg_basedir . $cfg_templets_dir . "/" . $row['templet']);      
$pv->SetTemplet($cfg_basedir . $cfg_templets_dir . "/" . $row['templet']);
$pv->Display();     
$pv->Display();
?>