Lumen5.2 只专注与提供无状态API,因此,session已经从框架中移除,如果你想要使用session,需要切换到 Laravel 5.2。
从 Lumen 5.2升级到 Laravel 5.2 很简单,只需要将路由和应用中自己编写的类拷贝到 Laravel 中即可,由于 Laravel 和 Lumen 共用很多底层组件,即使是自己编写的类也无需做大的改动。
1、升级依赖
更新 composer.json文件指向 laravel/lumen-framework 5.2.*
2、Application
Lumen 不再实现 Illuminate\Contracts\Foundation\Application契约,任何声明此类型依赖的都需要更新为直接引用 Laravel\Lumen\Application类。
认证
由于Lumen不再支持会话,认证完全基于API token或请求头来实现。关于Lumen中认证的实现及使用请参考完整认证文档。
集合
3、Eloquent集合基类
Eloquent集合实例现在返回一个集合基类( Illuminate\Support\Collection)以便提供如下几种方法: pluck、 keys、 zip、 collapse、 flatten、 flip。
保留Key
slice、 chunk和 reverse方法现在可以保留集合中的key,如果你不想要这些方法保留key,可以使用 Collection实例上的 values方法。
4、数据库
MySQL 日期
从 MySQL 5.7 开始, 0000-00-00 00:00:00不再被认为是一个有效的日期,因为 strict模式是默认开启的,所有时间戳字段在插入记录到数据库的时候必须接收一个有效的默认值,你可以在迁移中使用 useCurrent方法将时间戳字段默认设置为当前时间戳,或者调用 nullable方法以允许null值:
$table->timestamp('foo')->nullable();$table->timestamp('foo')->useCurrent();$table->nullableTimestamps();
MySQLJSON 字段类型
MySQL 5.7 起开始支持 json 字段,所以 json字段类型现在可以创建一个json字段并保存到数据库,如果使用MySQL版本低于5.7,那么需要使用 text字段保存json数据到该字段。
5、Eloquent
日期转化
被添加到$casts的所有被标记为date或datetime的属性在调用模型或集合上的toArray方法时现在都会被转化为字符串,从而和$dates数组中定义的日期转化保持一致。
全局作用域
全局作用域的实现被重写以便使用起来更加简单,全局作用域不再需要 remove方法,所以你编写的代码中如果调用了该方法需要将其移除。
如果你调用了Eloquent查询构建器上的 getQuery方法来访问底层的查询构建器实例,现在需要将其改为 toBase。
如果你调用了 remove方法,需要将其修改为 $eloquentBuilder->withoutGlobalScope($scope)。
Eloquent查询构建器新增了 withoutGlobalScope和 withoutGlobalScopes方法,所有调用 $model->removeGlobalScopes($builder)的地方现在需要修改为更加简单的 $builder->withoutGlobalScopes()。
主键
默认情况下,Eloquent假设你的主键是整型并且会将其自动转化为整型,设置任何不是整型的主键需要设置Eloquent模型上的 $incrementing属性值为 false:
/** * Indicates if the IDs are auto-incrementing. * * @var bool */public $incrementing = true;
6、 异常处理
App\Exceptions\Handler类的 $dontReport属性现在需要包含至少以下几种异常类型:
use Illuminate\Validation\ValidationException;use Illuminate\Auth\Access\AuthorizationException;use Illuminate\Database\Eloquent\ModelNotFoundException;use Symfony\Component\HttpKernel\Exception\HttpException;/** * A list of the exception types that should not be reported. * * @var array */protected $dontReport = [ AuthorizationException::class, HttpException::class, ModelNotFoundException::class, ValidationException::class,];
7、 IronMQ
IronMQ 队列驱动现在被转移到其自己的包中,核心框架不再包含其处理,要使用IronMQ,请参考: http://github.com/LaravelCollective/iron-queue
8、 存储
如果你使用了Laravel的Flysystem,需要注册 filesystem绑定,添家如下代码到 bootstrap/app.php:
$app->singleton('filesystem', function ($app) { return $app->loadComponent( 'filesystems', Illuminate\Filesystem\FilesystemServiceProvider::class, 'filesystem' );});
9、 验证
被Lumen控制器基类使用的 ValidatesRequeststrait现在被合并到 ProvidesConvenienceMethodstrait。
如果你先前在控制器基类之外使用了 ValidatesRequeststrait,可以将其从5.1分支拷贝过来或者直接使用 ProvidesConvenienceMethodstrait。

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.


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