各位大大们,请给给我分析下$CONF未初始化的原因，谢谢各位大大，高手们....

<?php
/**
 * 总体配置文件
 */
$CONF = array();
/**
 * 系统配置
 */
$CONF['sys']['show_error'] = '0';
/**
 * 数据库配置
 */
$CONF['db']['host'] = "localhost";
$CONF['db']['user'] = "root";
$CONF['db']['pwd'] = "986913";
$CONF['db']['name'] = "product";/**
 * 路径配置
 */
$CONF['dir']['web'] = "http://localhost/cims";
$CONF['dir']['path'] = "D:/wamp/www/cims";/**
 * 上传配置
 */
$CONF['upload']['suffix'] = Array("jpg", "gif", "png", "rar", "zip", "wmv", "swf"); //上传类型
$CONF['upload']['filesize'] = 2048; //单个上传文件大小
$CONF['upload']['rename'] = 1; //上传的文件是否改名，改名的文件名为当前服务器的年月日时分秒?>
<?php
define("_SITE_ROOT", 'D:/wamp/www/cims');
require(_SITE_ROOT.'/smarty/Smarty.class.php');
require(_SITE_ROOT.'/adodb/adodb.inc.php');class comment extends Smarty {
var $DB, $CONF, $INCOME; function comment(){
require_once(_SITE_ROOT.'/include/config.php');
$this->CONF = $CONF;
if($this->CONF['sys']['show_error']){
ini_set('display_errors', true);
}else{
ini_set('display_errors', false);
} $this->Smarty();