ReflectionMethod::getClosure()

(PHP 5 >= 5.4.0, PHP 7)

返回一个动态建立的方法调用接口，译者注：可以使用这个返回值直接调用非公开方法。

说明

publicReflectionMethod::getClosure(object $object) :Closure

Warning

本函数还未编写文档，仅有参数列表。

参数

$object

不可以使用静态方法，需要其他类型的方法

返回值

返回Closure如果产生任何错误返回NULL

You can call private methods with getClosure():
<?php
function call_private_method($object, $method, $args = array()) {
  $reflection = new ReflectionClass(get_class($object));
  $closure = $reflection->getMethod($method)->getClosure($object);
  return call_user_func_array($closure, $args);
}
class Example {
  private $x = 1, $y = 10;
  private function sum() {
    print $this->x + $this->y;
  }
}
call_private_method(new Example(), 'sum');
?>
Output is 11.

Use method from another class context.
<?php
class A {
  private $var = 'class A';
  public function getVar() {
    return $this->var;
  }
  public function getCl() {
    return function () {
      $this->getVar();
    };
  }
}
class B {
  private $var = 'class B';
}
$a = new A();
$b = new B();
print $a->getVar() . PHP_EOL;
$reflection = new ReflectionClass(get_class($a));
$closure  = $reflection->getMethod('getVar')->getClosure($a);
$get_var_b = $closure->bindTo($b, $b);
print $get_var_b() . PHP_EOL;
// Output:
// class A
// class B