laravel 服务别名的理解

先看下容器别名数组属性是什么

container aliases属性

$arr = [
  "Illuminate\Foundation\Application" => "app"
  "Illuminate\Contracts\Container\Container" => "app"
  "Illuminate\Contracts\Foundation\Application" => "app"
  "Psr\Container\ContainerInterface" => "app"
  "Illuminate\Auth\AuthManager" => "auth"
  "Illuminate\Contracts\Auth\Factory" => "auth"
  "Illuminate\Contracts\Auth\Guard" => "auth.driver"
  "Illuminate\View\Compilers\BladeCompiler" => "blade.compiler"
  "Illuminate\Cache\CacheManager" => "cache"
  "Illuminate\Contracts\Cache\Factory" => "cache"
  "Illuminate\Cache\Repository" => "cache.store"
  "Illuminate\Contracts\Cache\Repository" => "cache.store"
  "Psr\SimpleCache\CacheInterface" => "cache.store"
  "Symfony\Component\Cache\Adapter\Psr16Adapter" => "cache.psr6"
  "Symfony\Component\Cache\Adapter\AdapterInterface" => "cache.psr6"
  "Psr\Cache\CacheItemPoolInterface" => "cache.psr6"
  "Illuminate\Redis\Connections\Connection" => "redis.connection"
  "Illuminate\Contracts\Redis\Connection" => "redis.connection"
  "Illuminate\Http\Request" => "request"
  "Symfony\Component\HttpFoundation\Request" => "request"
  "Illuminate\Routing\Router" => "router"
  "Illuminate\Contracts\Routing\Registrar" => "router"
  "Illuminate\Contracts\Routing\BindingRegistrar" => "router"
  "Illuminate\Session\SessionManager" => "session"
  "Illuminate\Session\Store" => "session.store"
  "Illuminate\Contracts\Session\Session" => "session.store"
  "Illuminate\Routing\UrlGenerator" => "url"
  "Illuminate\Contracts\Routing\UrlGenerator" => "url"
  "Illuminate\Validation\Factory" => "validator"
  "Illuminate\Contracts\Validation\Factory" => "validator"
  "Illuminate\View\Factory" => "view"
  "Illuminate\Contracts\View\Factory" => "view"
]　

 

再看下 抽象属性  

abstractAliases

$arr=  [
  "app" => array:4 [                                  
    0 => "Illuminate\Foundation\Application"          
    1 => "Illuminate\Contracts\Container\Container"   
    2 => "Illuminate\Contracts\Foundation\Application"
    3 => "Psr\Container\ContainerInterface"           
  ]                                                   
  "auth" => array:2 [                                 
    0 => "Illuminate\Auth\AuthManager"                
    1 => "Illuminate\Contracts\Auth\Factory"          
  ]                                                   
  "auth.driver" => array:1 [                          
    0 => "Illuminate\Contracts\Auth\Guard"
  ]
  "blade.compiler" => array:1 [
    0 => "Illuminate\View\Compilers\BladeCompiler"
  ]
  "cache" => array:2 [
    0 => "Illuminate\Cache\CacheManager"
    1 => "Illuminate\Contracts\Cache\Factory"
  ]
  "cache.store" => array:3 [
    0 => "Illuminate\Cache\Repository"
    1 => "Illuminate\Contracts\Cache\Repository"
    2 => "Psr\SimpleCache\CacheInterface"
  ]
  "cache.psr6" => array:3 [
    0 => "Symfony\Component\Cache\Adapter\Psr16Adapter"
    1 => "Symfony\Component\Cache\Adapter\AdapterInterface"
    2 => "Psr\Cache\CacheItemPoolInterface"
  ]
  "config" => array:2 [
    0 => "Illuminate\Config\Repository"
    1 => "Illuminate\Contracts\Config\Repository"
  ]
  "cookie" => array:3 [
    0 => "Illuminate\Cookie\CookieJar"
    1 => "Illuminate\Contracts\Cookie\Factory"
    2 => "Illuminate\Contracts\Cookie\QueueingFactory"
  ]
  "db" => array:2 [
    0 => "Illuminate\Database\DatabaseManager"
    1 => "Illuminate\Database\ConnectionResolverInterface"
  ]
  "db.connection" => array:2 [
    0 => "Illuminate\Database\Connection"
    1 => "Illuminate\Database\ConnectionInterface"
  ]
  "encrypter" => array:3 [
    0 => "Illuminate\Encryption\Encrypter"
    1 => "Illuminate\Contracts\Encryption\Encrypter"
    2 => "Illuminate\Contracts\Encryption\StringEncrypter"
  ]
  "events" => array:2 [
    0 => "Illuminate\Events\Dispatcher"
    1 => "Illuminate\Contracts\Events\Dispatcher"
  ]
  "files" => array:1 [
    0 => "Illuminate\Filesystem\Filesystem"
  ]
  "filesystem" => array:2 [
    0 => "Illuminate\Filesystem\FilesystemManager"
    1 => "Illuminate\Contracts\Filesystem\Factory"
  ]
  "filesystem.disk" => array:1 [
    0 => "Illuminate\Contracts\Filesystem\Filesystem"
  ]
  "filesystem.cloud" => array:1 [
    0 => "Illuminate\Contracts\Filesystem\Cloud"
  ]
  "hash" => array:1 [
    0 => "Illuminate\Hashing\HashManager"
  ]
  "hash.driver" => array:1 [
    0 => "Illuminate\Contracts\Hashing\Hasher"
  ]
  "translator" => array:2 [
    0 => "Illuminate\Translation\Translator"
    1 => "Illuminate\Contracts\Translation\Translator"
  ]
  "log" => array:2 [
    0 => "Illuminate\Log\LogManager"
    1 => "Psr\Log\LoggerInterface"
  ]
  "mail.manager" => array:2 [
    0 => "Illuminate\Mail\MailManager"
    1 => "Illuminate\Contracts\Mail\Factory"
  ]
  "mailer" => array:3 [
    0 => "Illuminate\Mail\Mailer"
    1 => "Illuminate\Contracts\Mail\Mailer"
    2 => "Illuminate\Contracts\Mail\MailQueue"
  ]
  "auth.password" => array:2 [
    0 => "Illuminate\Auth\Passwords\PasswordBrokerManager"
    1 => "Illuminate\Contracts\Auth\PasswordBrokerFactory"
  ]
  "auth.password.broker" => array:2 [
    0 => "Illuminate\Auth\Passwords\PasswordBroker"
    1 => "Illuminate\Contracts\Auth\PasswordBroker"
  ]
  "queue" => array:3 [
    0 => "Illuminate\Queue\QueueManager"
    1 => "Illuminate\Contracts\Queue\Factory"
    2 => "Illuminate\Contracts\Queue\Monitor"
  ]
  "queue.connection" => array:1 [
    0 => "Illuminate\Contracts\Queue\Queue"
  ]
  "queue.failer" => array:1 [
    0 => "Illuminate\Queue\Failed\FailedJobProviderInterface"
  ]
  "redirect" => array:1 [
    0 => "Illuminate\Routing\Redirector"
  ]
  "redis" => array:2 [
    0 => "Illuminate\Redis\RedisManager"
    1 => "Illuminate\Contracts\Redis\Factory"
  ]
  "redis.connection" => array:2 [
    0 => "Illuminate\Redis\Connections\Connection"
    1 => "Illuminate\Contracts\Redis\Connection"
  ]
  "request" => array:2 [
    0 => "Illuminate\Http\Request"
    1 => "Symfony\Component\HttpFoundation\Request"
  ]
  "router" => array:3 [
    0 => "Illuminate\Routing\Router"
    1 => "Illuminate\Contracts\Routing\Registrar"
    2 => "Illuminate\Contracts\Routing\BindingRegistrar"
  ]
  "session" => array:1 [
    0 => "Illuminate\Session\SessionManager"
  ]
  "session.store" => array:2 [
    0 => "Illuminate\Session\Store"
    1 => "Illuminate\Contracts\Session\Session"
  ]
  "url" => array:2 [
    0 => "Illuminate\Routing\UrlGenerator"
    1 => "Illuminate\Contracts\Routing\UrlGenerator"
  ]
  "validator" => array:2 [
    0 => "Illuminate\Validation\Factory"
    1 => "Illuminate\Contracts\Validation\Factory"
  ]
  "view" => array:2 [
    0 => "Illuminate\View\Factory"
    1 => "Illuminate\Contracts\View\Factory"
  ]
]