培训机构网站php源码

// 示例代码：使用预处理语句防止SQL注入
$conn = new mysqli($servername, $username, $password, $dbname);
$stmt = $conn->prepare("SELECT * FROM users WHERE username = ?");
$stmt->bind_param("s", $username);
$username = $_POST['username'];
$stmt->execute();
$result = $stmt->get_result();

// 示例代码：使用OPcache
opcache_enable();

// 示例代码：使用PHPMailer发送邮件
require 'vendor/autoload.php';
$mail = new PHPMailer(true);
try {
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'user@example.com';
    $mail->Password = 'password';
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
    $mail->Port = 587;
    $mail->setFrom('from@example.com', 'Mailer');
    $mail->addAddress('to@example.com', 'Receiver');
    $mail->isHTML(true);
    $mail->Subject = 'Here is the subject';
    $mail->Body    = 'This is the HTML message body <b>in bold!</b>';
    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}