Extended callables

README.md

PHP callables

Those are callables recognized by PHP natively. They can be invoked simply: $callable(...).

• Closures: function () { ... }

• Static method call: ['A', 'staticMethod'] or also Foo::staticMethod

  class A {
      public static function staticMethod() { ... }
  }

• Method call: [new B, 'method']

  class B {
      public function method() { ... }
  }

• Invokable class: new C

  class C {
      public function __invoke() { ... }
  }

• Function call: 'hello'

  function hello() { ... }

Extended callables

Extended callables are a made-up thing not recognized by PHP. They can be called using Invoker and are used for example in the Silly framework.

• Method call: ['B', 'method']

  class B {
      public function method() { ... }
  }

  Warning: the method must not be static, else it will be recognized as a normal PHP callable representing a static method call.

• Invokable class: 'C'

  class C {
      public function __invoke() { ... }
  }

  Warning: C must not be a function, else it will be recognized as a normal PHP callable representing a function call.

The Invoker will instantiate the object instances using any Container. The benefits are:

• lazy creation of objects
• objects are created by containers, which means the container can inject dependencies