聊聊laravel中的Service Container

// public/index.php <?php  require __DIR__.'/../bootstrap/autoload.php';  $app = require_once __DIR__.'/../bootstrap/app.php';  $kernel = $app->make(IlluminateContractshttpKernel::class);  $response = $kernel->handle(     $request = IlluminateHttpRequest::capture() );  $response->send();  $kernel->terminate($request, $response);

// bootstrap/app.php <?php  $app = new IlluminateFoundationApplication(     realpath(__DIR__.'/../') );  $app->singleton(     IlluminateContractsHttpKernel::class,     AppHttpKernel::class );  $app->singleton(     IlluminateContractsconsoleKernel::class,     AppConsoleKernel::class );  $app->singleton(     IlluminateContractsDebugExceptionHandler::class,     AppExceptionsHandler::class );  return $app;

//使用闭包 $container->bind('BarInterface', function(){     return new Bar(); }); //或者使用字符串 $container->bind('FooInterface', 'Foo');

$container->singleton('BarInterface', function(){     return new Bar(); });

$bar = new Bar(); $bar->setSomething(new Something);  $container->instance('Bar', $bar);

$container->when('Man')           ->needs('PartnerInterface')           ->give('Woman'); $container->when('Woman')           ->needs('PartnerInterface')           ->give('Man');

$container->bind('Father', function () {     // }); $container->bind('Mother', function () {     // }); $container->bind('Daughter', function () {     // }); $container->bind('Son', function () {     // }); $container->tag(['Father', 'Mother', 'Daughter', 'Son'], 'familyMembers');  $container->bind('Family', function ($container) {     return new Family($container->tagged('familyMembers')); });

$foo = $container->make('Foo');

$bar = $container['Bar'];

$familyMembers = $container->tagged('familyMembers');  foreach ($familyMembers as $inpidual) {     $inpidual->doSomething(); }

$container->resolving(function ($object, $container) {     // 当容器解析任何类型的对象时会被调用... });  $container->resolving('Foo', function (Foo $foo, $container) {     // 当容器解析「Foo」类型的对象时会被调用... });