Please Login First!"; exit(1); } if($_SERVER['REQUEST_METHOD']=="POST"){ $m=$_POST["m"]; if($m=="problem_add_source"){ $pid=intval($_POST['pid']); $new_source=($_POST['ns']); $sql= "update problem set source=concat(source,' ',?) where problem_id=?"; echo pdo_query($sql,$new_source,$pid); } if($m=="problem_update_time"){ $pid=intval($_POST['pid']); $time=intval($_POST['t']); $sql= "update problem set time_limit=? where problem_id=?"; echo pdo_query($sql,$time,$pid); } if($m=="problem_get_title"){ $pid=intval($_POST['pid']); $sql= "select title,source from problem where problem_id=?"; $row=mysql_query_cache($sql,$pid)[0]; echo $row['title']."  ".$row['source'].""; } if($m=="user_update_nick"){ $user_id=$_POST['user_id']; $nick=$_POST['nick']; $sql= "update users set nick=? where user_id=?"; echo pdo_query($sql,$nick,$user_id); $sql= "update solution set nick=? where user_id=?"; pdo_query($sql,$nick,$user_id); } if($m=="user_update_school"){ $user_id=$_POST['user_id']; $school=$_POST['school']; $sql= "update users set school=? where user_id=?"; echo pdo_query($sql,$school,$user_id); } if($m=="user_update_group_name"){ $user_id=$_POST['user_id']; $group_name=$_POST['group_name']; $sql="update users set group_name=? where user_id=?"; echo pdo_query($sql,$group_name,$user_id); } if($m=="get_user_list_of_contest"){ $contest_id=$_POST['contest_id']; $sql= "select distinct user_id from privilege where rightstr=? "; $users=pdo_query($sql,"c".$contest_id); foreach($users as $user){ echo $user['user_id']."\r\n"; } } }