PHP 依赖注入

<?php class Bim { public function doSomething() { echo __METHOD__, '|'; } } class Bar { private $bim; public function __construct(Bim $bim) { $this->bim = $bim; } public function doSomething() { $this->bim->doSomething(); echo __METHOD__, '|'; } } class Foo { private $bar; public function __construct(Bar $bar) { $this->bar = $bar; } public function doSomething() { $this->bar->doSomething(); echo __METHOD__; } } class Container { private $s = array(); function __set($k, $c) { $this->s[$k] = $c; } function __get($k) { return $this->s[$k]($this); } } $c = new Container(); $c->bim = function () { return new Bim(); }; $c->bar = function ($c) { return new Bar($c->bim); }; $c->foo = function ($c) { return new Foo($c->bar); }; // 从容器中取得Foo $foo = $c->foo; $foo->doSomething(); // Bim::doSomething|Bar::doSomething|Foo::doSomething

PHP 依赖注入

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