新浪sae， 微信公众平台的MySQL链接问题

elseif($keyword=="绩效查询")
{
$msgType = "text";
$contentStr = "请输入您的学号";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
}else if(is_numeric($keyword)){
if(strlen($keyword)==7)
{
//////
$contentStr = "进入 if(strlen($keyword)==7)";
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
////

                $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS);


                if(!$con)
                { 
                    //////
                    $contentStr = "进入 if(!$con)";
                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                    ////
                    die('could not connect:'.mysql_error()); 
                }else{

                    /////
                    $contentStr = "进入else";
                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                    /////
                    mysql_select_db("app_cjcx123",$con);
                    $query = sprintf("SELECT * FROM table1 WHERE xm = 1450375");


                    $result = mysql_query($query);
                    while ($row = mysql_fetch_assoc($result)) {
                        $contentStr=$row['xm'].$row['cj'];
                        mysql_close($con);
                    }
                }
            }else if(!is_numeric($keyword)){
                $msgType = "text";
                $contentStr = "学号错误，请重新输入";
                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            }else{
                $contentStr = "Input something...";
                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            }

        }

        这是源码。加了几个输出，卡到
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS);
        这一句，后面的if  else 都没进去，求教，连接数据库的 几个参数需要定义全局变量还是怎么弄

http://zhidao.baidu.com/link?url=c8Jj-cA960luNUWfP_shNzFoUBVBoioa1vtMYm3_Qn9p2tfMWIwP_IDG9wP31mwypaaJwe-TtDX0ezKRQtNnqkeCGkluemyAceVEk9li6uW