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- <?php
- namespace App\Services;
- use Illuminate\Support\Carbon;
- use Cache;
- class SnowflakeService {
- public static function byDate(Carbon $ts = null)
- {
- if($ts instanceOf Carbon) {
- $ts = now()->parse($ts)->timestamp;
- } else {
- return self::next();
- }
- return ((round($ts * 1000) - 1549756800000) << 22)
- | (random_int(1,31) << 17)
- | (random_int(1,31) << 12)
- | 0;
- }
- public static function next()
- {
- $seq = Cache::get('snowflake:seq');
- if(!$seq) {
- Cache::put('snowflake:seq', 1);
- $seq = 1;
- } else {
- Cache::increment('snowflake:seq');
- }
- if($seq >= 4095) {
- Cache::put('snowflake:seq', 0);
- $seq = 0;
- }
- return ((round(microtime(true) * 1000) - 1549756800000) << 22)
- | (random_int(1,31) << 17)
- | (random_int(1,31) << 12)
- | $seq;
- }
- }
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