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php实现网约车代码

2026-01-29 06:29:23PHP

以下是一个基于PHP的网约车系统核心功能实现示例，包含关键模块的代码片段：

php实现网约车代码

数据库设计

创建MySQL数据库表结构：

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL,
    password VARCHAR(255) NOT NULL,
    user_type ENUM('driver', 'passenger') NOT NULL,
    current_lat DECIMAL(10, 8),
    current_lng DECIMAL(11, 8)
);

CREATE TABLE rides (
    id INT AUTO_INCREMENT PRIMARY KEY,
    passenger_id INT NOT NULL,
    driver_id INT,
    start_lat DECIMAL(10, 8) NOT NULL,
    start_lng DECIMAL(11, 8) NOT NULL,
    end_lat DECIMAL(10, 8) NOT NULL,
    end_lng DECIMAL(11, 8) NOT NULL,
    status ENUM('requested', 'accepted', 'completed', 'cancelled') DEFAULT 'requested',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (passenger_id) REFERENCES users(id),
    FOREIGN KEY (driver_id) REFERENCES users(id)
);

用户注册与登录

// 用户注册
function registerUser($username, $password, $userType) {
    $hashedPassword = password_hash($password, PASSWORD_DEFAULT);
    $stmt = $pdo->prepare("INSERT INTO users (username, password, user_type) VALUES (?, ?, ?)");
    return $stmt->execute([$username, $hashedPassword, $userType]);
}

// 用户登录
function loginUser($username, $password) {
    $stmt = $pdo->prepare("SELECT * FROM users WHERE username = ?");
    $stmt->execute([$username]);
    $user = $stmt->fetch();

    if ($user && password_verify($password, $user['password'])) {
        $_SESSION['user_id'] = $user['id'];
        $_SESSION['user_type'] = $user['user_type'];
        return true;
    }
    return false;
}

行程请求处理

// 乘客发起行程请求
function requestRide($passengerId, $startLat, $startLng, $endLat, $endLng) {
    $stmt = $pdo->prepare("INSERT INTO rides (passenger_id, start_lat, start_lng, end_lat, end_lng) VALUES (?, ?, ?, ?, ?)");
    $stmt->execute([$passengerId, $startLat, $startLng, $endLat, $endLng]);
    return $pdo->lastInsertId();
}

// 司机接单
function acceptRide($driverId, $rideId) {
    $stmt = $pdo->prepare("UPDATE rides SET driver_id = ?, status = 'accepted' WHERE id = ? AND status = 'requested'");
    return $stmt->execute([$driverId, $rideId]);
}

位置更新与匹配

// 更新用户位置
function updateLocation($userId, $lat, $lng) {
    $stmt = $pdo->prepare("UPDATE users SET current_lat = ?, current_lng = ? WHERE id = ?");
    return $stmt->execute([$lat, $lng, $userId]);
}

// 查找附近司机
function findNearbyDrivers($lat, $lng, $radius = 5) {
    $stmt = $pdo->prepare("SELECT id, username, (6371 * acos(cos(radians(?)) * cos(radians(current_lat)) * cos(radians(current_lng) - radians(?)) + sin(radians(?)) * sin(radians(current_lat)))) AS distance FROM users WHERE user_type = 'driver' HAVING distance < ? ORDER BY distance");
    $stmt->execute([$lat, $lng, $lat, $radius]);
    return $stmt->fetchAll();
}

价格计算

function calculateFare($startLat, $startLng, $endLat, $endLng, $baseFare = 5, $perKm = 1.5) {
    // 使用Haversine公式计算距离(km)
    $earthRadius = 6371;
    $latDiff = deg2rad($endLat - $startLat);
    $lngDiff = deg2rad($endLng - $startLng);

    $a = sin($latDiff/2) * sin($latDiff/2) + cos(deg2rad($startLat)) * cos(deg2rad($endLat)) * sin($lngDiff/2) * sin($lngDiff/2);
    $c = 2 * atan2(sqrt($a), sqrt(1-$a));
    $distance = $earthRadius * $c;

    return $baseFare + ($distance * $perKm);
}