使用 PDO (+ 预处理)

以下实例使用了预处理语句。

选取了 MyGuests 表中的 id, firstname 和 lastname 字段,并放到 HTML 表格中:

实例 (PDO)

<?phpecho "<table style='border: solid 1px black;'>";echo "<tr><th>Id</th><th>Firstname</th><th>Lastname</th></tr>"; class TableRows extends RecursiveIteratorIterator {    function __construct($it) {        parent::__construct($it, self::LEAVES_ONLY);    }    function current() {        return "<td style='width:150px;border:1px solid black;'>" . parent::current(). "</td>";    }    function beginChildren() {        echo "<tr>";    }    function endChildren() {        echo "</tr>" . " ";    } } $servername = "localhost";$username = "username";$password = "password";$dbname = "myDBPDO"; try {    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);    $stmt = $conn->prepare("SELECT id, firstname, lastname FROM MyGuests");    $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 "</table>";?>