Online PHP editor | output for j1Ru8

@ 2015-09-09T16:34:31Z

<?php

// proof of concept: call method from parents parent

class A
{
	private $value = 'please override me';

	public function set()
	{
		$this->value = 'A was here';
	}

	public function get()
	{
		return $this->value;
	}
}

class B extends A
{
	public function set()
	{
		// do nothing, value is "please override me"
	}
}

class C extends B
{
	public function set()
	{
		$class       = new ReflectionClass($this);
		$parent      = $class->getParentClass();
		$grandParent = $parent->getParentClass();
		$method      = $grandParent->getMethod('set');
		$closure     = $method->getClosure($this);

		$closure();
	}
}

// as reference, B::set() was overridden:
$b = new B;
$b->set();
var_dump($b->get()); // "please override me"

// and now parent::parent::set() :)
$c = new C;
$c->set();
var_dump($c->get()); // "A was here"

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: string(18) "please override me" string(10) "A was here"
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: string(18) "please override me" Fatal error: Call to undefined method ReflectionMethod::getClosure() in /in/j1Ru8 on line 36
Process exited with code 255.
Output for 5.1.0: Fatal error: fatal flex scanner internal error--end of buffer missed in /in/j1Ru8 on line 50
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/j1Ru8 on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/j1Ru8 on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/j1Ru8 on line 7
Process exited with code 255.

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