<?php namespace BitApps\WPValidator\Rules; use BitApps\WPValidator\Rule; class BooleanRule extends Rule { private $message = 'The :attribute must be a boolean'; public function validate($value) { return \in_array($value, [true, false, 'true', 'false', 1, 0, '0', '1'], true); } public function message() { return $this->message; } }