老師，我寫了兩條插入語句，但是，最后主鍵沒有增加，還是0；???$num1='218';??? $name1='zj';?? $sql1="insert into user(num,name) value('$num1','$name1')";??? mysql_query($sql1);?? $num2='201';?? $name2='xx';?? $sql2="insert into user(num,name) value('$num2','$name2')";?? mysql_query($sql2);?? $uid=mysql_insert_id();?? echo "主鍵id:".$uid;