登录页增加选择单位下拉菜单 

    <tr height="37" class="login_field">
      <td align="center">
        <b>用户名</b> <input type="text" class="text" name="UNAME" size="15" onmouseover="this.focus()" onfocus="this.select()" value="">
        <b>密码</b> <input type="password" class="text" name="PASSWORD" onmouseover="this.focus()" onfocus="this.select()" size="15" value="">
         &nbsp;
		 <select name="CDB" class="BigSelect">
			<option value="cdb1">单位一</option>
			<option value="cdb2">单位二</option>
		</select>
		 
         &nbsp;
		 
		 
		 <input type="hidden" name="encode_type" value="1"><input type="submit" name="submit" class="submit" value="登 录">
      </td>
    </tr>

loginckeck.php增加生成cookie

<?php


setcookie('CDB',"$_POST[CDB]",time()+1111160,"/");

oa_config.php最底部增加session及数据库和缓存目录配置

if($_COOKIE['CDB']){

    $MYSQL_DB=$_COOKIE['CDB'];
    $ATTACH_PATH2="/myoa/attach_".$_COOKIE['CDB']."/";
    $MYOA_CACHE_CONFIG = array(
       'prefix' => $_COOKIE['CDB'],
       'cache_path' => $MYOA_CACHE_PATH,
    );

}