PHP增删改查的容易实现

PHP增删改查的简单实现

come from http://hi.baidu.com/javashmily/item/69d117fc3ebbdd723d198b9e

//获得连接
$db = mysql_connect("localhost", "root", "root") or die(mysql_error());
echo "Connected to MySQL
";
//连接数据库
mysql_select_db("php") or die(mysql_error());
echo "Connected to Database";
//增加操作
if ($submit){????????????????????????????????????????????????????????????????
??? $sql = "INSERT INTO student (id,name) VALUES ('$id','$name')";??????????????????
??? $result = MySQL_query($sql);????????????????????????????????????
??? echo "记录添加成功！

";?????????????????????????????????
??? }
??? //删除操作
??? if($delete){
??? $sql ="delete from student where id = $id";
??? $result = mysql_query($sql);
??? echo "删除了id为 $id 的记录 ";
??? }
??? //修改操作
??? if($update){
??? $sql = "update student set name='$name' where id = $id";
??? $result = mysql_query($sql);
??? echo "修改成功！！";
??? }
??? //查询数据，并用表格显示出来
??? $result = mysql_query("select * from student",$db);

echo "

\n";??????????????????????????????????????
??? echo "";?????????????????????????????????????????????????????
??? echo "\n";?????????????????????????????????????????????????
??? //循环遍历??????????????????????????????????????????????????????????
while ($myrow = mysql_fetch_row($result)){???????????????????????????????????????????????????????????????
??? printf("", $myrow[0], $myrow[1]);
??? }???????????????????????????????????????????????????????????????
echo "

id	姓名
%s	%s

\n";
?>