Laravel Timezone Service

gistfile1.txt

<?php

namespace Kolay\Time\Services\TimeZone;

use DateTimeZone;

class TimeZoneService
{
    /**
     * Get all available timezones with their offsets
     *
     * @return array<string, array>
     */
    public function getTimezones(): array
    {
        $timezones = [];
        $identifiers = DateTimeZone::listIdentifiers();

        foreach ($identifiers as $identifier) {
            $timezone = new DateTimeZone($identifier);
            $offset = $timezone->getOffset(now());
            $offsetString = $this->formatOffset($offset);

            // Group by region
            $region = explode('/', $identifier)[0];

            $timezones[$region][] = [
                'id' => $identifier,
                'name' => str_replace('_', ' ', $identifier),
                'offset' => $offsetString,
                'display' => "({$offsetString}) ".str_replace('_', ' ', $identifier),
            ];
        }

        // Sort regions
        ksort($timezones);

        // Sort timezones within each region
        foreach ($timezones as &$regionTimezones) {
            usort($regionTimezones, function ($a, $b) {
                return $a['name'] <=> $b['name'];
            });
        }

        return $timezones;
    }

    /**
     * Format timezone offset
     */
    private function formatOffset(int $offset): string
    {
        $hours = abs($offset) / 3600;
        $minutes = abs($offset) % 3600 / 60;

        return sprintf('%s%02d:%02d',
            $offset < 0 ? '-' : '+',
            floor($hours),
            $minutes
        );
    }
}