PHPINSERTINTO插入不了数据有关问题

@header("content-Type: text/html; charset=utf-8");

require_once 'inc/site_config.php';

require_once 'inc/db_connections.php';

require_once 'inc/function.php';

mysql_query('set character set "utf8"');

 session_start();

if($_REQUEST['action']=='postreg'){

$sql_check_usr="select * from `reguser`  where `UserId`='".$_SESSION['uid']."'";

$info=mysql_query($sql_check_usr);

$dingdanhao=date("YmjHis").$info[UserId];

$spc=$_SESSION[producelist];

$slc= $_SESSION[quatity];

$shouhuoren=$_POST['trusername'];

$dizhi=$_POST['address'];

$youbian=$_POST['phone'];

$tel=$_POST['mob'];

$email=$_POST['email'];

if(trim($_POST['d_content'])==""){

   $leaveword="";

 }

 else{

   $leaveword=$_POST['d_content'];

}

 $xiadanren=$_SESSION['uid'];

 $time=date("Y-m-j H:i:s");

 $total=$_SESSION[total];

 

$sql_add_usr="INSERT INTO onlineorder  (dingdanhao,spc,slc,UserName,address,phone,mobile,mail,yqinfo,OrderTime,UserId,total_price) VALUES ('$dingdanhao','$spc','$slc','$trusername','$address','$phone','$mob','$email','$d_content','$time','$xiadanren','$total')";

mysql_query($sql_add_usr);



}