Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource in
mysql_select_db($bbs_users,$mydb);
$query_string="select user_id,user_level from bbs_users where username='$current_user_name'";
$db_data=mysql_query($query_string,$mydb);
list($current_user_id,$current_user_level)=mysql_fetch_row($db_data);
提示:
Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource in d:\wwwroot\digbbs\wwwroot\dvp\leftlist.php on line 42
就是list($current_user_id,$current_user_level)=mysql_fetch_row($db_data);
这一行。
什么原因?