$addquery="INSERT INTO article(id,title,date,author,address,content)VALUES
('$id',$title',NOW(),'$author',$mail','$context')";
改成
$addquery=mysql_query("INSERT INTO article(id,title,date,author,address,content)VALUES ('$id',$title',NOW(),'$author',$mail','$context')");
('$id',$title',NOW(),'$author',$mail','$context')";
改成
$addquery=mysql_query("INSERT INTO article(id,title,date,author,address,content)VALUES ('$id',$title',NOW(),'$author',$mail','$context')");
$title'和$mail'各少了左边的引号?
整个语句是对的!