php7连接MySQL实现简易查询程序的方法

 
 



 
学号:
 
姓名: 
 

<&＃63;php
$server="localhost";//主机的IP地址
$db_username="root";//数据库用户名
$db_password="123456";//数据库密码
$db_name = "data";

<&＃63;php
header("Content-Type: text/html; charset=utf8");
if(!isset($_POST["submit"]))
{
 exit("未检测到表单提交");
}//检测是否有submit操作
include ("config.php");
$Sid = $_POST['Sid'];//post获得学号表单值
$name = $_POST['name'];//post获得姓名表单值
echo "";
echo "";
class TableRows extends RecursiveIteratorIterator
{
 function __construct($it)
 {
  parent::__construct($it, self::LEAVES_ONLY);
 }

 function current()
 {
  return "";
 }

 function beginChildren()
 {
  echo "";
 }

 function endChildren()
 {
  echo "" . "\n";
 }
}
try {
 $cOnn= new PDO("mysql:host=$server;dbname=$db_name", $db_username, $db_password);
 $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 $stmt = $conn->prepare("SELECT Sid, name, class FROM data where Sid=$Sid and name='$name'");
 $stmt->execute();

 // 设置结果集为关联数组
 $result = $stmt->setFetchMode(PDO::FETCH_ASSOC);
 foreach (new TableRows(new RecursiveArrayIterator($stmt->fetchAll())) as $k => $v) {
  echo $v;
 }
} catch (PDOException $e) {
 echo "Error: " . $e->getMessage();
}
$cOnn= null;
echo "
学号
姓名
班级
" . parent::current() . "
";