请大侠指教一下，我为什么连接不上数据库呢 以下是代码： <?php $db=mysql_connect("localhost","root","xxmi.com"); mysql_select_db("mydb",$db); if($id) { $result=myaql_query("SELECT * FROM employees WHERE id=id",$db); $myrow=mysql_fetch_array($result); printf("名: %s\n
",$myrow["first"]); printf("姓: %s\n
",$myrow["last"]); printf("住址: %s
",$myrow["address"]); printf("职位: %s
",$myrow["postion"]); } else { $result=mysql_query("SELECT * FROM employees",$db); if($myrow=mysql_fetch_array($result)) { do { printf("%s %s
\n",$PATH_INFO,$myrow["id"],$myrow["first"],$myrow["last"]); } while($myrow=mysql_fetch_array($result)); } else { echo "对不起，没有找到记录！"； } } ?>