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我不明白爲什麼這不起作用:更新/回聲不工作
$sql = "UPDATE tbl_users SET balance = balance - 250 WHERE userID = <?php echo $row['userID']; ?>";
我與PDO
工作,這裏有什麼問題?需要一些幫助
session_start();
require_once 'class.user.php';
$user_home = new USER();
if(!$user_home->is_logged_in()) {
$user_home->redirect('index.php');
}
$stmt = $user_home->runQuery("SELECT * FROM tbl_users WHERE userID=:uid");
$stmt->execute(array(":uid"=>$_SESSION['userSession']));
$row = $stmt->fetch(PDO::FETCH_ASSOC);
$servername = "test.de.mysql";
$username = "test";
$password = "test";
$dbname = "test";
try {
$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql = "UPDATE tbl_users SET balance = balance - 250 WHERE userID = <?php echo $row['userID']; ?>";
// Prepare statement
$stmt = $conn->prepare($sql);
// execute the query
$stmt->execute();
// echo a message to say the UPDATE succeeded
echo $stmt->rowCount() . " records UPDATED successfully";
}
catch(PDOException $e)
{
echo $sql . "<br>" . $e->getMessage();
}
$conn = null;
發生任何錯誤? –
嗯....你已經在PHP這裏'<?php echo $ row ['userID']; ?>'應該得到一個關於它的錯誤;一個PARSE錯誤。 –
我不會出錯!你可以在這裏看到它。 kevinshop.de/test.1php –