<?php
 namespace ModStart\Core\Util; class IdUtil { public static function generate($group = 'Default') { static $map = []; if (empty($map[$group])) { $map[$group] = 0; } $map[$group]++; return $group . '_' . $map[$group]; } public static function next64BitId() { return intval(microtime(true) * 10000) . (getmypid() % 10) . sprintf('%04d', rand(0, 9999)); } public static function next64BitIdSeq($workerId = null) { static $lastTimestamp = null; static $seq = 0; static $bit = null; do { $timestamp = intval(microtime(true) * 10000); if ($timestamp !== $lastTimestamp) { $seq = 0; } } while ($seq >= 1000); $lastTimestamp = $timestamp; if ($workerId === null) { $workerId = getmypid(); } $workerBit = ($workerId % 10); if (null === $bit) { $bit = rand(0, 9); } return $timestamp . $workerBit . $bit . sprintf('%03d', $seq++); } public static function generateSN() { return date('YmdHis', time()) . rand(10000000, 99999999); } }