PHP问题【急】【急】【急】【急】请大神帮忙

<?php     require "system/system.php";     $tpl =  new KSeeing();    $tpl->assign("show",'success');    $show = '111';    include('templates/index.html');  =======================这样写的话 $show能成功赋值    //include('F:/AppServ/www/temp/tpl/com_index.html.php');     //$tpl->compile('index.html');===================这样写的话$show不能赋值?>

	<div class="logo"><?php  echo $show ?></div>

function compile($fileName){            $ducument_root = $_SERVER['DOCUMENT_ROOT'];            $tplFile = $ducument_root.$this->template_dir.$fileName; //找到模版文件            if(!file_exists($tplFile)){                return false;            }            $comFile = $ducument_root.$this->compile_dir.'com_'.basename($tplFile).'.php';//构造编译后的文件            if(!file_exists($comFile) || filemtime($comFile)<filemtime($tplFile)){                $repContent  = $this->tpl_replace(file_get_contents($tplFile));//获取源文件内容并替换成php源格式                $handle = fopen($comFile,'w+');                fwrite($handle,$repContent);                fclose($handle);            }            include($comFile);        }

extract($this->data);include($comFile);

extract($this->data);include($comFile);

<?php     require "system/system.php";     $tpl =  new KSeeing();    $tpl->assign("show",'success');    //$show = '111';    include('templates/index.html');    //include('F:/AppServ/www/temp/tpl/com_index.html.php');    $tpl->compile('index.html');?>

<?php     require "system/system.php";     $show = '111';        $tpl->compile('index.html');?>

extract($this->data);include($comFile);

<?php     require "system/system.php";     $tpl =  new KSeeing();    $tpl->assign("show",'success');    //$show = '111';    //include('templates/index.html');    //include('F:/AppServ/www/temp/tpl/com_index.html.php');    $tpl->compile('index.html');?>