itsmelepassos / phpoo-timezone

src/Timezone.php

<?php

/*

 * Copyright (c) 2021. Leandro Passos.

 */


namespace ItsMeLePassos\Timezone;

/**

 * Class Timezone

 * @package ItsMeLePassos\Timezone

 */

class Timezone

{

    /**

     * setTimezone - define a timezone in the PHP official list

     * https://www.php.net/manual/en/timezones.php

     *

     * @param string|null $timezone

     * @return string|null

     */

    public function timezone(string $timezone = null): string

    {

        return date_default_timezone_set($timezone);

It seems like $timezone can also be of type null; however, parameter $timezoneId of date_default_timezone_set() does only seem to accept string, maybe add an additional type check?

The expression return date_default_timezone_set($timezone) returns the type boolean which is incompatible with the type-hinted return string.

    }

}