php中include文件夹分析，

<?<span>php 
</span><span>header</span>("content-type:text/html;charset=utf-8");<span>//</span><span>设置字符</span>
date_default_timezone_set("PRC");<span>//</span><span>设置时间区域为中国</span>
<span>session_start</span>();<span>//</span><span>全局开启session</span>
<span>define</span>("ROOT",<span>dirname</span>(<span>__FILE__</span>));<span>//</span><span>__FILE__是当前文件的绝对完整路径；dirname()获取返回当前文件路径的 绝对路径部分</span>
<span>set_include_path</span>(".".PATH_SEPARATOR.ROOT."/lib".PATH_SEPARATOR.ROOT."/core".PATH_SEPARATOR.ROOT."/configs".PATH_SEPARATOR.<span>get_include_path</span><span>());
</span><span>//</span><span>set_include_path()是设置包含文件的路径</span>
<span>require_once</span> 'mysql.func.php'<span>;
</span><span>require_once</span> 'image.func.php';