<?php class Foo { private $value = 'HI'; public function filter_callable(callable $p) { return $p($this); } public function filter_closure(\Closure $p) { return $p($this); } private function getValue() { return $this->value; } } $foo = new Foo(); echo $foo->filter_callable([$foo, 'getValue']); echo $foo->filter_closure(function($p) { return $p->getValue(); });
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