prepare("SELECT username, balance FROM users WHERE id = ?"); $stmt->execute([$user_id]); $user = $stmt->fetch(); if ($_SERVER['REQUEST_METHOD'] === 'POST' && !empty($_POST['message'])) { $msg = trim($_POST['message']); $stmt = $pdo->prepare("INSERT INTO support_messages (user_id, sender, message) VALUES (?, 'user', ?)"); $stmt->execute([$user_id, $msg]); } $stmt = $pdo->prepare("SELECT * FROM support_messages WHERE user_id = ? ORDER BY created_at ASC"); $stmt->execute([$user_id]); $messages = $stmt->fetchAll(); ?> 客服中心 - 全球接码

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